WO2019116949A1 - Decorative body - Google Patents
Decorative body Download PDFInfo
- Publication number
- WO2019116949A1 WO2019116949A1 PCT/JP2018/044420 JP2018044420W WO2019116949A1 WO 2019116949 A1 WO2019116949 A1 WO 2019116949A1 JP 2018044420 W JP2018044420 W JP 2018044420W WO 2019116949 A1 WO2019116949 A1 WO 2019116949A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- decorative body
- inclined surface
- tire
- inclination angle
- piece
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
- B60C13/001—Decorating, marking or the like
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
Definitions
- the present disclosure relates to a decorative body formed on a tire side portion.
- JP 2013-71572 A JP 2008-273505 A, JP 2008-189165 A, JP 2002-52294 A, and JP 2012-101754 A
- the visibility is improved as a tire.
- a tire is disclosed in which the tire side portion is provided with a roughening process for the purpose.
- a plurality of pattern elements having the same contour shape and having directivity in which light reflection characteristics change continuously or stepwise in one direction are the tire circumference.
- the arrangement direction is arranged continuously along the tire radial direction, and the arrangement direction is periodically changed along the tire circumferential direction, and the arrangement directions are made different between adjacent ones in the tire radial direction.
- Such arrangement of the pattern elements makes the portion where the pattern elements are arranged appear three-dimensionally to the viewer as if the unevenness is generated, making the unevenness existing on the outer surface of the sidewall portion inconspicuous. However, it does not improve the visibility of the tire itself.
- an uneven portion is formed on the outer surface of the sidewall portion, a mirror surface is provided on at least a part of the recess, and a rough surface is provided around the mirror surface.
- the second decorative body provided in the first decorative body is produced on the outer surface of the sidewall by producing a visual effect that appears to be emphasized.
- the unevenness can be made inconspicuous or the decorativeness can be improved, the visibility of the tire itself is not improved.
- the decoration of these tire side parts is noticeable when looking at the tire, and any technique is used to make the unevenness on the tire side parts inconspicuous or to improve the visibility of characters etc. Yes, it did not improve tire visibility.
- the present disclosure aims to provide a decorative body capable of improving the visibility of a tire.
- the decorative body according to the first aspect includes a plurality of three-dimensional shapes including the bottom surface and a plurality of inclined surfaces inclined in a direction other than the surface perpendicular to the bottom surface, with the surface of the tire side portion as the bottom surface.
- the inclination angle of the inclined surface with the smallest inclination angle with respect to the bottom in the three-dimensional shape is set in the range of 3 to 60 degrees, and the inclination angle is When a direction from the highest portion side to the lowest portion side of the smallest inclined surface is defined as a vector of the inclined surface, three or more types of three or more types of solids having different directions of the vector when the tire side portion is viewed in plan It is configured including the shape.
- the decorative body satisfying all of the conditions described above has the light irradiated to the tire, for example, the side of the tire, on several slopes separated from each other among the plurality of slopes having the smallest inclination angle.
- the inclined surface that reflects light toward the observer changes randomly.
- the decorative body appears to blink light at a plurality of different positions, in other words, the decorative body looks like a sparkling appearance.
- the definition of glitter is explained below.
- the highlight part (the part that looks brightest when viewed in a certain range) has the effect of making the change appear to blink.
- the highlight part When viewed in a stationary state, with the change of the light source to be irradiated, the effect that the highlight part changes and it looks like the change is blinking.
- a second aspect is the decorative body according to the first aspect, wherein the inclination angle is set in a range of 4 to 45 degrees.
- the glittering feeling can be emphasized as compared with the case of being set outside the range.
- the inclination angle is set within a range of 5 to 30 degrees.
- the glitter feeling can be emphasized as compared with the case of being set outside the range.
- a fourth aspect relates to the decorative body according to any one of the first to third aspects, wherein the solid shape has a side having a maximum height above the outer side of the bottom, or the outer side of the bottom The three-dimensional shape having one vertex above is included.
- the inclined surface with a small inclination angle is more peripheral than the inclined surface with a large inclination angle.
- the percentage of light reflected by the observer on the side of the tire is large.
- the former solid when comparing a solid shape having one vertex (a point having the maximum height) above the outer edge of the bottom with a solid shape having a vertex at a position deviated from above the outer edge of the bottom, the former solid The shape can increase the area of the inclined surface having the smallest inclination angle, and can emphasize the sparkling appearance of the decorative body.
- the area of the inclined surface having the smallest inclination angle per unit area in a plan view is 70 to 100%. In the range of
- the inclined surface with a small inclination angle is more peripheral than the inclined surface with a large inclination angle.
- the percentage of light reflected by the observer on the side of the tire is large.
- the area of the inclined surface with the smallest inclination angle per unit area of the decoration when the decoration is viewed in plan is in the range of 70 to 100%, the observer located on the front side of the tire
- the area of the part that reflects light can be secured, and the part that reflects light can be made to look bright to the observer, and the glittering feeling can be increased.
- the area of the inclined surface with the smallest inclination angle per unit area of the decorative body is less than 70%, the area of the inclined surface that reflects light to the observer located on the front side of the tire decreases. The effect of increasing the feeling of glittering is lacking.
- a sixth aspect is the decorative body according to any one of the first to fifth aspects, wherein the inclined surface having the smallest inclination angle is a flatter surface than the tire side portion.
- the inclined surface having the smallest inclination angle as a flat surface and making it smoother than the tire side portion, the inclined surface can be made a reflective surface that is less likely to diffusely reflect than the tire side portion. Much can be reflected in the direction of the observer, which can improve the sparkling feeling.
- the inclined surface flat compared to the case where the inclined surface is curved, the area for reflecting light toward the observer can be made larger, and the whole inclined surface glows on the observer side. Because it looks like, you can improve the sparkling feeling.
- a seventh aspect is the decorative body according to any one of the first to sixth aspects, wherein 3 to 200 of the three-dimensional shapes are provided per 1 cm 2 .
- the number of three-dimensional shapes per unit area when the number of three-dimensional shapes per unit area is small, the number of parts that can be seen to be luminous is too small, and it is difficult to obtain a glittery feeling.
- the number of three-dimensional shapes per unit area is too large, the area of the part that looks like light is too small, and it becomes difficult to make the part that looks like light look bright, and it becomes difficult to obtain a sparkling feeling. Therefore, in order to emphasize the sparkling appearance of the decorative body, it is preferable to arrange 3 to 200 three-dimensional shapes per 1 cm 2 .
- the bottom surface is a polygon having a quadrangle or more
- a part of the plurality of three-dimensional shapes with respect to the bottom surface is 3D shape including the number of vertical planes ⁇ the number of sides of the bottom surface is included.
- the decorative body in a three-dimensional shape in which the bottom surface is a polygon having a quadrangle or more, the number of planes perpendicular to the bottom surface ⁇ the number of sides of the bottom It will be formed over the surface.
- a plane perpendicular to the bottom of a three-dimensional shape parallel to the tire side portion perpendicular to the ground when the tire is mounted on a vehicle
- a plane inclined to the bottom When light is directed toward the diagonally downward from above, such as sunlight, the side of the tire (the side portion of the tire) is more inclined than the side perpendicular to the bottom side. Since the light can be reflected in the direction of the viewer on the front side and the oblique front side, the decorative body according to the eighth aspect in which one or more inclined surfaces can be formed with respect to the bottom surface The appearance can be emphasized.
- a ninth aspect is the decorative body according to any one of the first to eighth aspects, wherein at least a part of the plurality of three-dimensional shapes includes three-dimensional shapes having different heights.
- the plurality of three-dimensional shapes since at least a part of the plurality of three-dimensional shapes includes three-dimensional shapes having different heights, it is possible to make the gradient of the inclined surface uneven, in other words, a plurality of three-dimensional shapes A plurality of three-dimensional shapes with different slopes of the slopes are included therein, and the sparkling appearance can be enhanced as compared to the case where the slopes of the plurality of three-dimensional shapes all have the same slope.
- the decorative body of the present disclosure it is possible to make the decorative body look like glittery, thereby improving the visibility of the tire.
- FIG. 5 is a plan view showing the dimensions of a first set of a pair of reflective pieces. It is an enlarged plan view of the decoration part which expressed the height of the inclined surface of a reflective piece with shading.
- (A) is a plan view showing the first set
- (B) is a plan view showing the first set in which the height of the inclined surface of the reflecting piece is expressed by shading
- (C) is a longitudinal sectional view of the first set It is an elevation view
- (D) is a figure showing the relation between concentration and height size.
- (A) is a plan view showing one reflective piece of the second set
- (B) is a plan view showing the other reflective piece of the second set
- (C) is the height of the inclined surface of the reflective piece FIG.
- 6D is a plan view showing a second set in which D is expressed by shading
- (D) is a cross-sectional view of one reflective piece of the second set
- (E) is a cross-sectional view of the other reflective piece of the second set
- (A) is a plan view showing the third set
- (B) is a plan view showing the third set in which the height of the inclined surface of the reflecting piece is expressed by shading
- (C) is a longitudinal sectional view of the third set It is a front view.
- (A) is a plan view showing one reflective piece of the fourth set
- (B) is a plan view showing the other reflective piece of the fourth set
- (C) is the height of the inclined surface of the reflective piece FIG.
- FIG. 14D is a plan view showing a fourth set of lightness and darkness
- FIG. 25D is a cross-sectional view of one of the reflective pieces of the fourth set
- (A) to (D) are a plan view and a perspective view of a reflection cell constituting a decorative body according to another embodiment.
- (A) to (D) are a plan view and a perspective view of a reflection cell constituting a decorative body according to still another embodiment.
- (A) to (D) are a plan view and a perspective view of a reflection cell constituting a decorative body according to still another embodiment.
- (A) to (D) are a plan view and a perspective view of a reflection cell constituting a decorative body according to still another embodiment.
- FIG. 8C is a plan view showing a set of reflection cells, in which FIG. 7C is a plan view showing a case where three reflection cells in which the vector direction is the same direction (lateral direction) continue, and FIG. It is a top view showing the case where three reflection cells which made the direction of the vector the same direction (longitudinal direction) continued, and (E) is a top view showing the set of reflection cells which made the direction of the vector differ.
- FIG. 7C is a plan view showing a case where three reflection cells in which the vector direction is the same direction (lateral direction) continue
- FIG. It is a top view showing the case where three reflection cells which made the direction of the vector the same direction (longitudinal direction) continued
- (E) is a top view showing the set of reflection cells which made the direction of the vector differ.
- 11F is a plan view showing a set of reflective cells having a vector and a reflective cell having no vector (the top surface is parallel to the bottom surface). It is a top view of a reflective cell which shows the case where the rotation direction of a vector continues in the same rotation direction and three same at the same angle. It is a perspective view explaining the top surface (inclined surface) of a reflective cell. It is a perspective view explaining the angle of the inclined surface of a reflective cell. It is a perspective view which shows the vector of the reflective cell of triangular prism shape. It is a perspective view which shows the vector of the other triangular prism shaped reflective cell. It is a perspective view which shows the vector of the square prism-shaped reflective cell.
- FIG. 1 It is a perspective view which shows the vector of the other square pole-shaped reflective cell.
- (A) and (B) are a plan view and a side view showing three reflection cells in which the directions of the vectors are the same in plan view and the inclination angles of the inclined surfaces are the same.
- (A) and (B) are a plan view and a side view showing three reflection cells in which the directions of vectors are the same in plan view and the inclination angles of the inclined surfaces are different. It is a table showing a test result.
- FIGS. 1 to 14 A tire 10 according to an embodiment of the present invention will be described using FIGS. 1 to 14. As shown in FIG. 1, an annular decorative body 14 is provided on the tire side portion 12 of the tire 10.
- the decorative body 14 is a reflecting piece 16 as an example of eight types of three-dimensional shapes that looks substantially triangular when the tire side portion 12 is viewed in plan, and the reflection of the shape to be described in detail later. It is constituted by pieces 16A to 16H.
- any two of the reflecting pieces 16A to 16G are combined with the longest sides facing each other to form a third three-dimensional shape pair having a substantially rhombic outer shape.
- a first set 18A, a second set 18B, a third set 18C, and a fourth set 18D are configured.
- the reflection piece 16A and the reflection piece 16B are combined in a substantially rhombic shape to form a first set 18A
- the reflection piece 16C and the reflection piece 16D are combined in a substantially rhombus to form a second set.
- the set 18B is configured, and the reflecting piece 16E and the reflecting piece 16F are combined in a substantially rhombic shape to form a third set 18C, and the reflecting piece 16G and the reflecting piece 16H are combined in a substantially rhombic shape to configure a fourth set 18D It is done. Then, the first set 18A, the second set 18B, the third set 18C, and the fourth set 18D are arranged in order along one direction (in FIG. 3, the horizontal direction in the drawing), thereby forming an elongated and substantially parallelogram.
- a reflection cell 20 having an outer shape is configured.
- the reflecting cells 20 configured as described above are spread in the longitudinal direction and the short direction (the direction orthogonal to the longitudinal direction) of the reflecting cells 20. Is made up of As shown in FIG. 3, one reflection cell 20 adjacent to the short side direction and the other reflection cell 20 are arranged slightly shifted in the longitudinal direction of the reflection cell 20.
- the longitudinal direction D (the direction of the arrow) of the reflective cell 20 is the radial direction r (the direction of the arrow) of the annular decorative body 14.
- the longitudinal direction D (the direction of the arrow) of the reflective cell 20 is the radial direction r (the direction of the arrow) of the annular decorative body 14.
- r the direction of the arrow
- the reflecting piece 16A is inclined at a relatively large angle with respect to the first side 16Aa parallel to the longitudinal direction D of the reflecting cell 20 and the longitudinal direction D of the reflecting cell 20. It has two sides 16Ab and a longest third side 16Ac inclined at a relatively small angle with respect to the longitudinal direction D of the reflection cell 20.
- the first side 16Aa and the second side 16Ab are linear in a plan view
- the third side 16Ac has a radius of curvature R of 73.7 mm, for example, so as to be convex inward in a triangular shape. It is curved.
- an angle ⁇ 1 formed between the first side 16Aa and the second side 16Ab is 106.1 degrees (deg) in plan view.
- the reflecting piece 16A has a length L1 of the first side 16Aa of 2.1 mm and a dimension h in the direction orthogonal to the first side 16Aa of 2.325 mm.
- the connecting portion 16As1 between the first side 16Aa and the second side 16Ab is, for example, formed in an arc shape having a curvature radius of R2.1 mm. Further, the connecting portion 16As2 between the first side 16Aa and the third side 16Ac and the connecting portion 16As3 between the second side 16Aa and the third side 16Ac are formed in an arc shape with a radius of curvature R 0.1 mm in plan view, as an example. It is done.
- the reflecting piece 16 ⁇ / b> A has a triangular prism shape with a low height protruding from the ground portion of the tire side portion 12 as a whole.
- the reflecting piece 16A is the highest at the third side 16Ac, and the height is constant at 0.4 mm overall.
- the top surface (hereinafter also referred to as the inclined surface 16At) of the reflecting piece 16A gradually decreases in height from the third side 16Ac toward the connecting portion 16As1 of the first side 16Aa and the second side 16Ab. doing. That is, the height of the inclined surface 16At is the lowest at the connection portion 16As1 (for example, the height is 0 mm).
- the inclined surface 16At is a flat surface.
- the arrow shown in FIG. 7B indicates the inclination direction (downward direction) of the inclined surface 16At of the reflecting piece 16A, and the high density portion is high and the low density portion is high. Represents the lower part (see FIG. 7 (D)).
- the reflecting piece 16B has a first side 16Ba parallel to the longitudinal direction D of the reflective cell 20, a second side 16Bb inclined at a relatively large angle with respect to the longitudinal direction D of the reflective cell 20, and It has the longest third side 16Bc which is inclined at a relatively small angle with respect to the longitudinal direction D of the reflection cell 20.
- the first side 16Ba and the second side 16Bb of the reflecting piece 16B are linear in a plan view, but the third side 16Bc is convex to the inside of the triangle as an example
- the curvature radius R is curved at 73.7 mm.
- the angle ⁇ 1 formed by the first side 16Ba and the second side 16Bb is 106.1 degrees (deg) in plan view.
- the connecting portion 16Bs1 between the first side 16Ba and the second side 16Bb is, for example, formed in an arc shape having a radius of curvature R2.1 mm in plan view. Further, the connecting portion 16Bs2 between the first side 16Ba and the third side 16Bc and the connecting portion 16Ba3 between the second side 16Bb and the third side 16Bc are formed in an arc shape having a radius of curvature R 0.1 mm in plan view, as an example. It is done.
- the plan view shape of the reflecting piece 16B is point-symmetrical to the reflecting piece 16A with the central point of the first set 18A, which is substantially rhombic in plan view, as the center of symmetry.
- the reflecting piece 16 ⁇ / b> B has a triangular prism shape with a low height protruding from the ground portion of the tire side portion 12 as a whole.
- the connecting portion 16Bs1 of the first side 16Ba and the second side 16Bb is the highest (for example, 0.4 mm in height) on the top surface of the reflecting piece 16B (hereinafter referred to as the inclined surface 16Bt), and the connecting portion 16Bs1 is To the third side 16Bc, and the height of the entire third side 16Bc is the lowest in the reflecting piece 16B (as an example, the height is constant at 0 mm).
- the inclined surface 16Bt is a flat surface.
- the arrow shown in FIG. 7B indicates the inclination direction (downward direction) of the inclined surface 16Bt of the reflecting piece 16B, and the high density portion is high and the thin portion is low. Represents a part.
- the plan view shape of the reflecting piece 16C is the same shape (triangular shape) as the reflecting piece 16A.
- the reflecting piece 16C is in the form of a low-triangular prism having a height protruding from the ground portion of the tire side portion 12 as a whole.
- the reflection piece 16C is inclined such that the first side 16Ca is the highest (for example, the height is 0.4 mm) and is lowered from the first side 16Ca to the connecting portion 16Cs3 of the second side 16Cb and the third side 16Cc.
- the height of the connecting portion 16Cs3 is the lowest in the reflecting piece 16C (for example, the height is 0 mm).
- the inclined surface 16Ct inclined so as to descend from the first side 16Ca to the connecting portion 16Cs3 of the second side 16Cb and the third side 16Cc has the highest height at the connecting portion 16Cs3.
- the inclined surface 16Ct is a flat surface.
- the arrow shown in FIG. 8C indicates the inclination direction (downward direction) of the inclined surface 16Ct of the reflection piece 16C, and the high density part is high and the thin part is low. Represents a part.
- the plan view shape of the reflecting piece 16D is the same as the reflecting piece 16B (triangular shape).
- the reflecting piece 16D is in the form of a low-triangular prism having a height that protrudes at a constant height (for example, 0.2 mm) from the ground portion of the tire side portion 12 as a whole.
- the top surface 16Dt of the reflecting piece 16D is a plane parallel to the bottom surface 16b.
- the planar view shape of the reflective piece 16E is the same shape (triangular shape) as the reflective piece 16A.
- the reflecting piece 16E is in the form of a low-triangular prism having a height protruding from the ground portion of the tire side portion 12 as a whole.
- the reflecting piece 16E is inclined so that the connecting portion 16Es1 of the first side 16Ea and the second side 16Eb is the highest (for example, the height is 0.4 mm) and is lowered toward the third side 16Ec, and the third side 16Ec Is the lowest among the reflecting pieces 16E (as an example, the height is constant at 0 mm). That is, in the reflecting piece 16E, the inclined surface 16Et which is inclined from the connecting portion 16Es1 of the first side 16Ea and the second side 16Eb to the third side 16Ec has the lowest height at the third side 16Ec. ing.
- the inclined surface Et is a plane.
- the arrow shown in FIG. 9B indicates the inclination direction (downward direction) of the inclined surface 16Et of the reflecting piece 16B, and the high density part is high and the thin part is low. Represents a part.
- the planar view shape of the reflective piece 16F is the same shape (triangular shape) as the reflective piece 16B.
- the reflecting piece 16F is in the form of a low-triangular prism having a height protruding from the ground portion of the tire side portion 12 as a whole.
- the reflecting piece 16F is inclined so that the third side 16Fc is the highest (for example, height 0.4 mm) and is lowered toward the connecting portion 16Fs1 between the first side 16Fa and the second side 16Fb, and the connecting portion 16Fs1
- the height is the lowest among the reflection pieces 16F (for example, the height is 0 mm).
- the inclined surface 16Ft inclined so as to descend from the third side 16Fc to the connecting portion 16Fs1 of the first side 16Fa and the second side 16Fb has the highest height at the connecting portion 16Fs1.
- the inclined surface 16Ft is a flat surface.
- the arrow shown in FIG. 9 (B) indicates the inclination direction (downward direction) of the inclined surface 16Ft of the reflecting piece 16F, and the high density part is high and the thin part is low. Represents a part.
- the plan view shape of the reflecting piece 16G is the same shape (triangular shape) as the reflecting piece 16A.
- the reflecting piece 16 ⁇ / b> G is in the form of a low-triangular prism having a height that protrudes by a constant height (for example, 0.2 mm) from the ground portion of the tire side portion 12 as a whole.
- the top surface 16Gt of the reflecting piece 16G is a plane parallel to the bottom surface 16b.
- the planar view shape of the reflective piece 16H is the same shape (triangular shape) as the reflective piece 16B.
- the reflecting piece 16H is in the form of a triangular prism with a low height protruding from the ground portion of the tire side portion 12 as a whole.
- the reflecting piece 16H is inclined so that the connecting portion 16Hs3 between the second side 16Hb and the third side 16Hc is the highest (for example, the height is 0.4 mm) and is lowered toward the first side 16Ha, and the first side 16Ha Is the lowest among the reflecting pieces 16B (as an example, the height is constant at 0 mm).
- the inclined surface 16Ht inclined so as to descend from the connecting portion 16Hs3 between the second side 16Hb and 16Hc to the first side 16Ha is the lowest at the first side 16Ha.
- the inclined surface 16Ht is a flat surface.
- the arrow shown in FIG. 10C indicates the inclination direction (downward direction) of the inclined surface 16Ht of the reflecting piece 16H, and the high density part is high and the thin part is low. Represents a part.
- a narrow and rhombic diagonally extending gap S1 formed in the above is a ground portion of the tire side portion 12.
- a gap S2 having a predetermined width is provided between one reflection cell 20 and the other reflection cell 20 arranged in the short direction of the reflection cell 20.
- the clearance S2 is also a ground portion of the tire side portion 12.
- Each top surface (inclined surface) of the reflecting piece 16 of the decorative body 14 is preferably smoother than the tire side portion 12 so as to facilitate regular reflection of light, in other words, less likely to diffusely reflect light,
- the surface roughness is preferably 1 to 15 Rz (Rt).
- the inclination angle with respect to the surface of the tire side portion 12 is preferably in the range of 3 to 60 degrees, more preferably in the range of 4 to 45 degrees, and still more preferably in the range of 5 to 30 degrees .
- each top surface of each reflective piece reflects light.
- the top surfaces of the reflective pieces constituting the decorative body 14 face various directions (see FIG. 6), and the tire side portion 12 on which the decorative body 14 is formed is curved. Therefore, for example, when the tire 10 is observed from the viewer standing on the front side or the diagonal front side of the tire 10, the top surface that reflects light toward the viewer is dispersed at various positions in the decoration 14 become.
- the top surface that reflects light toward the observer Changes with the relative movement, so when the observer looks at the decoration 14, the position of the light-appearing part (the inclined surface and the top surface) changes randomly and a shaking feeling is obtained, and the appearance of the decoration 14 having a glitter It looks like
- the decorative body 14 of the present embodiment includes three or more types of reflecting pieces 16 having different vector orientations when the tire side portion 12 is viewed in plan, reflecting pieces having the same vector orientation are the same. Compared with the case where it comprises including, and the case where it comprises including the two types of reflective piece 16 from which direction of a vector differs, a feeling of glitter can be improved.
- the inclined surface 16At of the reflecting piece 16A, the inclined surface 16Bt of the reflecting piece 16B, and the inclination of the reflecting piece 16C which are the inclined surfaces having the smallest inclination angle with respect to the bottom surface 16b.
- the inclination angle of the surface 16Ct, the inclined surface 16Et of the reflecting piece 16E, the inclined surface 16Ft of the reflecting piece 16F, and the inclined surface 16Ht of the reflecting piece 16H with respect to the tire side portion 12 (bottom surface 16b of the reflecting piece) is in the range of 3 to 60 degrees. Therefore, the glittering feeling can be enhanced as compared with the case of being out of this range.
- the decorative body 14 can improve the visibility of the tire 10 of the present embodiment, or can express a high-class feeling by the texture effect. If the inclination angle is less than 3 degrees, the inclination angles of the respective inclined surfaces become too small, and approach parallel to the surface of the tire side portion 12, so that the reflection of light for enhancing the glitter feeling is insufficient. On the other hand, if the above-mentioned inclination angle exceeds 60 degrees, the inclination angle of each inclined surface becomes too large, the area of each inclined surface when the tire side portion 12 is viewed in plan decreases, and it is difficult to improve the glitter feeling become.
- the reflective cell 20 is configured by eight types of reflective pieces 16A to 16G, and the reflective cell 20 is spread in the longitudinal direction and the lateral direction to configure the decorative body 14.
- the design and processing of the mold for molding the tire 10 are facilitated as compared to the case where the vectors of the inclined surfaces of all of the reflecting pieces to be configured are different.
- tire 10 concerning one embodiment of the present invention was explained, the present invention is not limited above, in the range which does not deviate from the main point besides the above, it can variously transform and can be carried out Of course there is one.
- the maximum height of the reflecting pieces 16A, 16B, 16C, 16E, 16F, 16H is 0.4 mm in the above embodiment, the maximum height is not limited to 0.4 mm. Moreover, although height of reflective piece 16D, 16G was 0.2 mm, height is not restricted to 0.2 mm.
- the reflecting pieces 16A to 16H preferably project from the ground portion of the tire side portion 12 by 0.1 to 1.5 mm.
- the reflecting piece 16 constituting the decorative body 14 has a triangular prism shape, but the present invention is not limited thereto.
- the decorative body 14 may be constituted by the reflecting pieces 22 different in the direction of the vector of the inclined surface 22t, and as shown in FIG.
- the decorative body 14 may be constituted by reflecting pieces 24 having different directions of the vector of the inclined surface 24t, as shown in FIG.
- the decorative body 14 may be formed of reflective pieces 26 having different directions of vectors of the inclined surface 26t, as shown in FIGS. 13 (B) to 13 (D).
- the decorative body 14 may be constituted by reflecting pieces 28 having different directions of the vector of the inclined surface 28t, and various shapes other than these as a plan view shape of the reflecting pieces.
- a shape can be employed, and the decorative body 14 may be configured by combining reflective pieces having different bottom shapes.
- the decorative body 14 has a start point of a vector (arrow) of one reflecting piece 22 adjacent to each other and a start point of a vector of the other reflecting piece 22 adjacent to each other
- a pair of reflecting pieces 22 in which the vector of one reflecting piece 22 and the vector of the other reflecting piece 22 face in the opposite direction is defined as a first three-dimensional shape pair 30, and as shown in FIG.
- the end point of the vector of one adjacent reflecting piece 16 and the end point of the vector of the other reflecting piece 22 are adjacent to each other, and the vector of one reflecting piece 22 and the vector of the other reflecting piece 16 face in the opposite directions.
- the pair of reflected pieces 22 is defined as a second solid shape pair 32, and as shown in FIGS. 15 (C) and 15 (D), the reflected pieces in which the vectors have the same direction.
- An aggregate of reflecting pieces 22 in which 2 is 3 or more continuous is defined as a three-dimensional shape group 34, and as shown in FIG. 15 (E) and FIG.
- a first three-dimensional shape pair 30, a second three-dimensional shape pair When the tire side portion 12 is viewed in plan when a pair consisting of two reflecting pieces 22 not belonging to any of 32 and the three-dimensional shape group 34 is defined as a third three-dimensional shape pair 36, the third three-dimensional shape pair A first condition satisfying a total area of 36> a first solid shape pair 30; a second condition satisfying a total area of a third solid shape pair 36> a second solid shape pair 32; All conditions of the third condition satisfying the total area number of the third three-dimensional shape pair 36> the total area number of the three-dimensional shape group 34 may be satisfied.
- the first three-dimensional shape pair 30, the second three-dimensional shape pair 32, and the three-dimensional shape group 34 may be included in the decorative body 14 as long as the above conditions are satisfied.
- the first three-dimensional shape pair 30, the second three-dimensional shape pair 32, and the first three-dimensional shape group 34 do not have to be included in the decorative body 14 because it is difficult to obtain a sparkling feeling.
- the third three-dimensional shape pair 30 corresponds to the first set 18A, the second set 18B, the third set 18C, and the fourth set 18D in the decorative body 14 of the embodiment.
- the thing corresponding to the 1st three-dimensional shape pair 30 mentioned above, the 2nd three-dimensional shape pair 32, and the three-dimensional shape group 34 is not provided.
- the decorative body 14 when the tire side portion 12 is viewed in plan, three reflective pieces 22 continuously arranged from one side to the other side are viewed.
- the direction of the rotational direction of the vector based on the normal set on the surface of the tire side portion 12 changes at the same angle (90 degrees as an example in FIG. 16) in the same rotational direction from one side to the other side Preferably, those that are being excluded.
- the arrangement of the inclined surfaces is felt to be regular, and the arrangement of the inclined surfaces that reflects light lacks a sense of randomness.
- the area of the inclined surface having the smallest inclination angle is preferably in the range of 70 to 100% with respect to the area of the bottom surface 16 b of the reflecting piece 16. This makes it possible to emphasize the sparkling feeling.
- the number of the reflecting pieces 16 is preferably 3 to 200 per 1 cm 2 , and more preferably 10 to 100. This makes it possible to emphasize the sparkling feeling.
- the surface reflecting light to the viewer is an inclined surface having the smallest inclination angle with respect to the bottom surface of the reflecting piece among the reflecting pieces as an example of the three-dimensional shape, in order to obtain a sparkling feeling.
- the highest part (apex) 22T of the reflecting piece 22 is a reflecting piece than the center of gravity G of the bottom of the reflecting piece 22 in plan view. It is preferable to be positioned above the outer peripheral side of the bottom surface of the surface 22 in order to increase the area of the inclined surface that reflects light.
- the highest part is a side
- the longitudinal direction center part of this side be the vertex 22T.
- the highest portion 22T is located in a portion near the side 23a of the bottom surface, whereby the surface having the largest area among a plurality of surfaces other than the bottom surface of the reflection piece 22. (The inclined surface with the smallest inclination angle with respect to the bottom surface) can be formed.
- the side 23 a of the side 23 a that includes the vertical line HL that passes through the highest part 22 T of the reflecting piece 22 and is perpendicular to the bottom and is closest to the highest part 22 T
- the base of the virtual surface 25 and the oblique side on one side of the virtual surface 25 (highest When the angle formed by the portion 22T and the side connecting the point 23ap is ⁇ a, and the angle formed by the base of the virtual surface 25 and the other oblique side of the virtual surface 25 (the side connecting the highest portion 22T and the point 23bp) is ⁇ b
- ⁇ b is 85 degrees or more and 95 degrees or less.
- the vector of the top surface that reflects the light of the reflective piece is supplemented.
- the direction from the side of the highest portion to the side of the lowest portion of the inclined surface having the smallest inclination angle to the bottom of the reflecting piece is defined as the vector of the inclined surface.
- the direction from the apex 16T toward the middle point 16cc of the side 16c is It is a vector (indicated by an arrow).
- the middle point of that side is used as the start point of the vector. If there is an edge with the lowest and constant height, let the midpoint of that edge be the end of the vector.
- the inclined surface is circular, elliptical or the like, the highest point of the outer peripheral portion of the inclined surface is taken as the start point of the vector, and the lowest point is taken as the end point of the vector.
- Table 1 below shows the degree of glittering of the decorative body when the angle of the inclined surface (top surface) having the smallest inclination angle among the reflecting pieces is variously changed to 4 of A, B, C, D The results of the graded evaluation are shown. In the result of sensory evaluation, A is excellent, B is good, C is acceptable, D is unacceptable.
- Test method of sensory evaluation -Assuming that the tire is mounted on a vehicle, observe the decorative body that is the object in a state where light is applied from 45 degrees diagonally from the front of the tire side surface on which the object is represented. At this time, the decoration is observed from a position perpendicular to the front with respect to the tire side surface. Move to the left and right within 50 cm of each side to observe and evaluate the decoration. -If the observer does not move, as described above, the tire is rolled 45 degrees to the left and right from a position perpendicular to the front of the tire side surface to observe and evaluate the decorative body.
- the inclination angle of the inclined surface having the smallest inclination angle among the reflecting pieces is preferably set in the range of 3 to 60 degrees, more preferably in the range of 4 to 45 degrees, and more preferably 5 to 30 It is understood that setting within the range of degrees is even more preferable.
- the decoration is observed from a position perpendicular to the front with respect to the tire side surface. Move to the left and right within 50 cm of each side, observe the decoration, and evaluate the sparkling feeling. -If the observer does not move, as described above, the tire is rolled 45 degrees to the left and right from a position perpendicular to the front of the tire side surface to observe and evaluate the decorative body.
- A represents the best
- B represents the good
- C represents the good
- D represents the acceptability
- E represents the rejectability.
- the combination of the ratio of the area of the top face of the reflective piece with the (Configuration 1) and the density of the reflective piece (Configuration 2) changes the glitter feeling. That is, it is understood from the test results that it is preferable to secure the reflection area by enlarging the area of the inclined surface of each reflecting piece when the decorative body 14 is viewed in plan from the axial direction of the tire 10. Further, from the test results, it is understood that the density of the reflective pieces disposed in the decorative body 14 is preferably 3 to 200 per cm 2, and more preferably 10 to 100 per cm 2 .
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Abstract
This decorative body is configured to include a plurality of reflective pieces provided with: a bottom surface that is the surface of a tire side section; and a plurality of inclined surfaces inclined in a direction other than that of a surface perpendicular to the bottom surface. An inclined surface having the smallest angle of inclination with respect to the bottom surface in the reflective pieces is set so as to have an angle of inclination within the range of 5-60° with respect to the bottom surface. The decorative body is configured to include three or more types of reflective pieces in which when the direction leading toward a lowest position side from a highest position side of the inclined surface having the smallest angle of inclination is defined as a vector (the arrow marks in the figure) of the inclined surface, the orientations of the vectors differ in a planar view of the tire side section.
Description
本開示は、タイヤサイド部に形成される装飾体に関する。
The present disclosure relates to a decorative body formed on a tire side portion.
特開2013-71572号公報、特開2008-273505号公報、特開2008-189165号公報、特表2002-52294号公報、及び特開2012-101754号公報には、タイヤとして、視認性を向上するための凹凸加工をタイヤサイド部に施したタイヤが開示されている。
In JP 2013-71572 A, JP 2008-273505 A, JP 2008-189165 A, JP 2002-52294 A, and JP 2012-101754 A, the visibility is improved as a tire. A tire is disclosed in which the tire side portion is provided with a roughening process for the purpose.
特開2013-71572号公報に開示されているタイヤでは、光の反射特性が一方向に連続的あるいは段階的に変化する方向性を有した同じ輪郭形状を成した複数の模様要素が、タイヤ周方向及びタイヤ径方向に連なって配置されており、配置向きをタイヤ周方向に沿って周期的に変化させていると共に、タイヤ径方向に隣り合う同士で、配置向きを異ならせている。このような模様要素の配置により、模様要素の配置された部分を、見る者に対して立体的に凹凸が発生しているように見せ、サイドウォール部の外表面に存在する凹凸を目立ち難くしているが、タイヤ自体の視認性を向上させるものではない。
In the tire disclosed in Japanese Patent Application Laid-Open No. 2013-71572, a plurality of pattern elements having the same contour shape and having directivity in which light reflection characteristics change continuously or stepwise in one direction are the tire circumference. The arrangement direction is arranged continuously along the tire radial direction, and the arrangement direction is periodically changed along the tire circumferential direction, and the arrangement directions are made different between adjacent ones in the tire radial direction. Such arrangement of the pattern elements makes the portion where the pattern elements are arranged appear three-dimensionally to the viewer as if the unevenness is generated, making the unevenness existing on the outer surface of the sidewall portion inconspicuous. However, it does not improve the visibility of the tire itself.
特開2008-273505号公報に開示されているタイヤでは、サイドウォール部の外表面に凹凸部を形成し、凹部の少なくとも一部表面に鏡面を設け、該鏡面の周辺に粗面を設けることで、光の反射性の変化に変化を持たせ、タイヤ外観性を向上させているが、タイヤ自体の視認性を向上させるものではない。また、粗面の凹部に汚れが入り込むと、汚れが除去し難い。
In the tire disclosed in JP2008-273505A, an uneven portion is formed on the outer surface of the sidewall portion, a mirror surface is provided on at least a part of the recess, and a rough surface is provided around the mirror surface. Although the change in light reflectivity is changed to improve the tire appearance, it does not improve the visibility of the tire itself. In addition, when dirt gets into the concave portion of the rough surface, it is difficult to remove the dirt.
特開2008-189165号公報に開示されているタイヤでは、多数の多角錘の集合体からなる環状の装飾体をサイドウォール部に設けることで、サイドウォール部の表面に現れるカーカス層のスプライス端や折り返し端などの凹凸を目立たないようにさせているが、タイヤ自体の視認性を向上させるものではない。
In the tire disclosed in Japanese Patent Laid-Open No. 2008-189165, by providing an annular decorative body consisting of an assembly of a large number of polygonal weights in the sidewall portion, the splice end of the carcass layer appearing on the surface of the sidewall portion or Although the unevenness such as the folded end is made inconspicuous, it does not improve the visibility of the tire itself.
特表2002-522294号公報に開示されているタイヤでは、文字部分と背景部分とで光の反射を変えることで、文字部分と背景部分との間にコントラストを生じさせ、文字を明確に識別できるようにしているが、タイヤ自体の視認性を向上させるものではない。
In the tire disclosed in Japanese Patent Application Laid-Open No. 2002-522294, by changing the reflection of light between the character part and the background part, a contrast is generated between the character part and the background part, and the characters can be clearly identified. However, it does not improve the visibility of the tire itself.
特開2012-101754号公報に開示されているタイヤでは、第1装飾体分内に設けられた第2装飾体分が強調されて見える視覚効果を生じさせることで、サイドウォールの外表面に生ずる凹凸を目立ち難くしたり、装飾性を向上させたりすることはできるが、タイヤ自体の視認性を向上させるものではない。
これらのタイヤサイド部の装飾等は、タイヤを注視したときに目立つものであり、何れの技術も、タイヤサイド部の凹凸を目立たないようにしたり、文字等の視認性を向上させたりするものであり、タイヤの視認性を向上させるものでは無かった。 In the tire disclosed in Japanese Patent Application Laid-Open No. 2012-101754, the second decorative body provided in the first decorative body is produced on the outer surface of the sidewall by producing a visual effect that appears to be emphasized. Although the unevenness can be made inconspicuous or the decorativeness can be improved, the visibility of the tire itself is not improved.
The decoration of these tire side parts is noticeable when looking at the tire, and any technique is used to make the unevenness on the tire side parts inconspicuous or to improve the visibility of characters etc. Yes, it did not improve tire visibility.
これらのタイヤサイド部の装飾等は、タイヤを注視したときに目立つものであり、何れの技術も、タイヤサイド部の凹凸を目立たないようにしたり、文字等の視認性を向上させたりするものであり、タイヤの視認性を向上させるものでは無かった。 In the tire disclosed in Japanese Patent Application Laid-Open No. 2012-101754, the second decorative body provided in the first decorative body is produced on the outer surface of the sidewall by producing a visual effect that appears to be emphasized. Although the unevenness can be made inconspicuous or the decorativeness can be improved, the visibility of the tire itself is not improved.
The decoration of these tire side parts is noticeable when looking at the tire, and any technique is used to make the unevenness on the tire side parts inconspicuous or to improve the visibility of characters etc. Yes, it did not improve tire visibility.
本開示は上記事実を考慮し、タイヤの視認性を向上可能な装飾体の提供を目的とする。
In light of the above-mentioned facts, the present disclosure aims to provide a decorative body capable of improving the visibility of a tire.
第1の態様に係る装飾体は、タイヤサイド部の表面を底面として、前記底面、及び前記底面に垂直な面以外の方向に傾斜する複数の傾斜面を備えた複数の立体形状を含んで構成された装飾体であって、前記立体形状の内で前記底面に対する傾斜角度が最も小さい前記傾斜面の前記底面に対する傾斜角度は、3~60度の範囲内に設定されており、前記傾斜角度が最も小さい前記傾斜面の最高部位側から最低部位側に向かう方向を前記傾斜面のベクトルと定義したときに、前記タイヤサイド部を平面視したときの前記ベクトルの向きが異なる3種類以上の前記立体形状を含んで構成されている。
The decorative body according to the first aspect includes a plurality of three-dimensional shapes including the bottom surface and a plurality of inclined surfaces inclined in a direction other than the surface perpendicular to the bottom surface, with the surface of the tire side portion as the bottom surface. And the inclination angle of the inclined surface with the smallest inclination angle with respect to the bottom in the three-dimensional shape is set in the range of 3 to 60 degrees, and the inclination angle is When a direction from the highest portion side to the lowest portion side of the smallest inclined surface is defined as a vector of the inclined surface, three or more types of three or more types of solids having different directions of the vector when the tire side portion is viewed in plan It is configured including the shape.
これらの各条件がすべて満足されている装飾体は、傾斜角度が最も小さい複数の傾斜面の内の互いに離間した幾つかの傾斜面で、タイヤに照射される光を、例えば、タイヤの側方の観察者の方向へ反射させることができ、タイヤ、及び観察者の少なくとも一方が動いて、タイヤと観察者とが相対移動すると、観察者の方へ光を反射する傾斜面がランダムに変わる。これにより、装飾体は複数の異なる位置で光が点滅するように見える、言い換えれば、装飾体がキラキラした外観に見える。
キラキラの定義を以下に説明する。
対象物に対し、視点の変化に伴い、ハイライト箇所(一定範囲で見る際、一番明るく見える箇所)が、点滅している様な変化が見える効果。静止状態で見る場合、照射する光源の変化に伴い、ハイライト箇所が変化し点滅している様な変化が見える効果。 The decorative body satisfying all of the conditions described above has the light irradiated to the tire, for example, the side of the tire, on several slopes separated from each other among the plurality of slopes having the smallest inclination angle. When the tire and the observer move relative to each other as the tire and / or the observer move, the inclined surface that reflects light toward the observer changes randomly. Thus, the decorative body appears to blink light at a plurality of different positions, in other words, the decorative body looks like a sparkling appearance.
The definition of glitter is explained below.
With respect to the object, with the change in the viewpoint, the highlight part (the part that looks brightest when viewed in a certain range) has the effect of making the change appear to blink. When viewed in a stationary state, with the change of the light source to be irradiated, the effect that the highlight part changes and it looks like the change is blinking.
キラキラの定義を以下に説明する。
対象物に対し、視点の変化に伴い、ハイライト箇所(一定範囲で見る際、一番明るく見える箇所)が、点滅している様な変化が見える効果。静止状態で見る場合、照射する光源の変化に伴い、ハイライト箇所が変化し点滅している様な変化が見える効果。 The decorative body satisfying all of the conditions described above has the light irradiated to the tire, for example, the side of the tire, on several slopes separated from each other among the plurality of slopes having the smallest inclination angle. When the tire and the observer move relative to each other as the tire and / or the observer move, the inclined surface that reflects light toward the observer changes randomly. Thus, the decorative body appears to blink light at a plurality of different positions, in other words, the decorative body looks like a sparkling appearance.
The definition of glitter is explained below.
With respect to the object, with the change in the viewpoint, the highlight part (the part that looks brightest when viewed in a certain range) has the effect of making the change appear to blink. When viewed in a stationary state, with the change of the light source to be irradiated, the effect that the highlight part changes and it looks like the change is blinking.
第2の態様は、第1の態様に係る装飾体において、前記傾斜角度が4~45度の範囲内に設定されている。
A second aspect is the decorative body according to the first aspect, wherein the inclination angle is set in a range of 4 to 45 degrees.
傾斜角度が最も小さい傾斜面の傾斜角度を4~45度の範囲内に設定することで、該範囲外に設定した場合に比較してキラキラ感を強調することができる。
By setting the inclination angle of the inclined surface having the smallest inclination angle within the range of 4 to 45 degrees, the glittering feeling can be emphasized as compared with the case of being set outside the range.
第3の態様は、第1の態様に係る装飾体において、前記傾斜角度が5~30度の範囲内に設定されている。
According to a third aspect, in the decorative body according to the first aspect, the inclination angle is set within a range of 5 to 30 degrees.
傾斜角度が最も小さい傾斜面の傾斜角度を5~30度の範囲内に設定することで、該範囲外に設定した場合に比較してキラキラ感を強調することができる。
By setting the inclination angle of the inclined surface having the smallest inclination angle within the range of 5 to 30 degrees, the glitter feeling can be emphasized as compared with the case of being set outside the range.
第4の態様は、第1~第3の態様の何れか1態様に係る装飾体において、前記底面の外辺の上方に最大高さを有する辺を有する前記立体形状、または前記底面の外辺の上方に一つの頂点を有する前記立体形状が含まれている。
A fourth aspect relates to the decorative body according to any one of the first to third aspects, wherein the solid shape has a side having a maximum height above the outer side of the bottom, or the outer side of the bottom The three-dimensional shape having one vertex above is included.
タイヤサイド部に配置される立体形状において、傾斜角度が小さい傾斜面と、傾斜角度が大きい傾斜面とを比較すると、傾斜角度が小さい傾斜面の方が、傾斜角度が大きい傾斜面よりも、周囲の光をタイヤ側方の観察者に反射する割合が大きい。
In the three-dimensional shape disposed on the tire side, comparing the inclined surface with a small inclination angle with the inclined surface with a large inclination angle, the inclined surface with a small inclination angle is more peripheral than the inclined surface with a large inclination angle. The percentage of light reflected by the observer on the side of the tire is large.
底面の外辺の上方に最大高さを有する辺を有する立体形状と、底面の外辺の上方から外れた位置に最大高さを有する辺を有する立体形状とを比較すると、前者の立体形状の方が、傾斜角度が最も小さい傾斜面の面積を大きくすることができ、装飾体のキラキラした外観を強調することができる。
Comparing the three-dimensional shape having the side with the largest height above the outer side of the bottom and the three-dimensional shape having the side with the largest height at the position away from the upper side of the outer side of the base, One can increase the area of the inclined surface having the smallest inclination angle, and can emphasize the sparkling appearance of the decoration.
また、底面の外辺の上方に一つの頂点(最大高さを有する点)を有する立体形状と、底面の外辺の上方から外れた位置に頂点を有する立体形状とを比較すると、前者の立体形状の方が、傾斜角度が最も小さい傾斜面の面積を大きくすることができ、装飾体のキラキラした外観を強調することができる。
In addition, when comparing a solid shape having one vertex (a point having the maximum height) above the outer edge of the bottom with a solid shape having a vertex at a position deviated from above the outer edge of the bottom, the former solid The shape can increase the area of the inclined surface having the smallest inclination angle, and can emphasize the sparkling appearance of the decorative body.
第5の態様は、第1~第4の態様の何れか1態様に係る装飾体において、平面視したときの単位面積当たりに占める前記傾斜角度が最も小さい前記傾斜面の面積が70~100%の範囲内にある。
According to a fifth aspect, in the decorative body according to any one of the first to fourth aspects, the area of the inclined surface having the smallest inclination angle per unit area in a plan view is 70 to 100%. In the range of
タイヤサイド部に配置される立体形状において、傾斜角度が小さい傾斜面と、傾斜角度が大きい傾斜面とを比較すると、傾斜角度が小さい傾斜面の方が、傾斜角度が大きい傾斜面よりも、周囲の光をタイヤ側方の観察者に反射する割合が大きい。
In the three-dimensional shape disposed on the tire side, comparing the inclined surface with a small inclination angle with the inclined surface with a large inclination angle, the inclined surface with a small inclination angle is more peripheral than the inclined surface with a large inclination angle. The percentage of light reflected by the observer on the side of the tire is large.
したがって、装飾体を平面視したときの、装飾体の単位面積当たりに占める傾斜角度が最も小さい傾斜面の面積を70~100%の範囲内とすることで、タイヤの正面側に位置する観察者に対して光を反射する部分の面積を確保し、観察者に対して、光を反射して光って見える部分を明るく見せることができ、キラキラ感を増すことができる。なお、装飾体の単位面積当たりに占める傾斜角度が最も小さい傾斜面の面積が70%未満になると、タイヤの正面側に位置する観察者に対して光を反射する傾斜面の面積が少なくなり、キラキラ感を増す効果が不足気味になる。
Therefore, when the area of the inclined surface with the smallest inclination angle per unit area of the decoration when the decoration is viewed in plan is in the range of 70 to 100%, the observer located on the front side of the tire On the other hand, the area of the part that reflects light can be secured, and the part that reflects light can be made to look bright to the observer, and the glittering feeling can be increased. If the area of the inclined surface with the smallest inclination angle per unit area of the decorative body is less than 70%, the area of the inclined surface that reflects light to the observer located on the front side of the tire decreases. The effect of increasing the feeling of glittering is lacking.
第6の態様は、第1~第5の態様の何れか1態様に係る装飾体において、傾斜角度が最も小さい前記傾斜面は、前記タイヤサイド部よりも平滑な平面である。
A sixth aspect is the decorative body according to any one of the first to fifth aspects, wherein the inclined surface having the smallest inclination angle is a flatter surface than the tire side portion.
傾斜角度が最も小さい傾斜面を平面とし、かつタイヤサイド部よりも平滑とすることで、該傾斜面をタイヤサイド部よりも乱反射し難い反射面とすることができ、反射面に入射した光の多くを観察者の方向に反射させることができ、キラキラ感を向上させることができる。また、傾斜面を平面とすることで、傾斜面を曲面にした場合に比較して、観察者に向けて光を反射する面積を大きくとることができ、観察者側においては傾斜面全体が光って見えるので、キラキラ感を向上させることができる。なお、傾斜面が湾曲していると、
傾斜面が光ったとしても、一部しか光って見えず(観察者に向けて光を反射する部分が、傾斜面の一部となるため)、傾斜面を平面とした場合のようにキラキラ感を向上させることができない。 By making the inclined surface having the smallest inclination angle as a flat surface and making it smoother than the tire side portion, the inclined surface can be made a reflective surface that is less likely to diffusely reflect than the tire side portion. Much can be reflected in the direction of the observer, which can improve the sparkling feeling. In addition, by making the inclined surface flat, compared to the case where the inclined surface is curved, the area for reflecting light toward the observer can be made larger, and the whole inclined surface glows on the observer side. Because it looks like, you can improve the sparkling feeling. In addition, when the inclined surface is curved,
Even if the inclined surface is luminous, only part of it appears to be luminous (because the part that reflects light towards the observer becomes a part of the inclined surface), and the glittering feeling is as if the inclined surface is flat. Can not improve.
傾斜面が光ったとしても、一部しか光って見えず(観察者に向けて光を反射する部分が、傾斜面の一部となるため)、傾斜面を平面とした場合のようにキラキラ感を向上させることができない。 By making the inclined surface having the smallest inclination angle as a flat surface and making it smoother than the tire side portion, the inclined surface can be made a reflective surface that is less likely to diffusely reflect than the tire side portion. Much can be reflected in the direction of the observer, which can improve the sparkling feeling. In addition, by making the inclined surface flat, compared to the case where the inclined surface is curved, the area for reflecting light toward the observer can be made larger, and the whole inclined surface glows on the observer side. Because it looks like, you can improve the sparkling feeling. In addition, when the inclined surface is curved,
Even if the inclined surface is luminous, only part of it appears to be luminous (because the part that reflects light towards the observer becomes a part of the inclined surface), and the glittering feeling is as if the inclined surface is flat. Can not improve.
第7の態様は、第1~第6の態様の何れか1態様に係る装飾体において、前記立体形状は、1cm2当たりに3~200個設けられている。
A seventh aspect is the decorative body according to any one of the first to sixth aspects, wherein 3 to 200 of the three-dimensional shapes are provided per 1 cm 2 .
装飾体において、単位面積当たりの立体形状の数が少ないと、光って見える部分の数が少なすぎてキラキラ感が得られ難くなる。一方、単位面積当たりの立体形状の数が多すぎると、光って見える部分の面積が小さすぎて光って見える部分を明るく見せることが困難となり、キラキラ感が得られ難くなる。このため、装飾体のキラキラした外観を強調するには、立体形状を1cm2当たりに3~200個配置することが好ましい。
In the decorative body, when the number of three-dimensional shapes per unit area is small, the number of parts that can be seen to be luminous is too small, and it is difficult to obtain a glittery feeling. On the other hand, when the number of three-dimensional shapes per unit area is too large, the area of the part that looks like light is too small, and it becomes difficult to make the part that looks like light look bright, and it becomes difficult to obtain a sparkling feeling. Therefore, in order to emphasize the sparkling appearance of the decorative body, it is preferable to arrange 3 to 200 three-dimensional shapes per 1 cm 2 .
第8の態様は、第1~第7の態様の何れか1態様に係る装飾体において、前記底面が四角形以上の多角形の場合、複数の前記立体形状の一部には、前記底面に対して垂直な面の数<前記底面の辺の数とされた立体形状が含まれている。
According to an eighth aspect, in the decorative body according to any one of the first to seventh aspects, in the case where the bottom surface is a polygon having a quadrangle or more, a part of the plurality of three-dimensional shapes with respect to the bottom surface is 3D shape including the number of vertical planes <the number of sides of the bottom surface is included.
この装飾体では、底面が四角形以上の多角形とされた立体形状において、底面に対して垂直な面の数<底面の辺の数とされていると、底面に対して傾斜した傾斜面が1面以上形成されることとなる。
立体形状の底面(タイヤを車両に装着した状態において、地面に対して垂直なタイヤサイド部と平行となる)に対して垂直な面と、底面に対しては傾斜している面に対して、太陽光等の上方から斜め下方へ向けて向かう光を照射した場合、底面に対して傾斜した面の方が、底面に対して垂直な面に比較して、タイヤの側方(タイヤサイド部の正面側、及び斜め正面側)の観察者の方向へ光を反射させることができるので、底面に対して傾斜した傾斜面の数を1面以上形成できる第8の態様の装飾体は、キラキラした外観を強調することができる。 In this decorative body, in a three-dimensional shape in which the bottom surface is a polygon having a quadrangle or more, the number of planes perpendicular to the bottom surface <the number of sides of the bottom It will be formed over the surface.
With respect to a plane perpendicular to the bottom of a three-dimensional shape (parallel to the tire side portion perpendicular to the ground when the tire is mounted on a vehicle) and a plane inclined to the bottom, When light is directed toward the diagonally downward from above, such as sunlight, the side of the tire (the side portion of the tire) is more inclined than the side perpendicular to the bottom side. Since the light can be reflected in the direction of the viewer on the front side and the oblique front side, the decorative body according to the eighth aspect in which one or more inclined surfaces can be formed with respect to the bottom surface The appearance can be emphasized.
立体形状の底面(タイヤを車両に装着した状態において、地面に対して垂直なタイヤサイド部と平行となる)に対して垂直な面と、底面に対しては傾斜している面に対して、太陽光等の上方から斜め下方へ向けて向かう光を照射した場合、底面に対して傾斜した面の方が、底面に対して垂直な面に比較して、タイヤの側方(タイヤサイド部の正面側、及び斜め正面側)の観察者の方向へ光を反射させることができるので、底面に対して傾斜した傾斜面の数を1面以上形成できる第8の態様の装飾体は、キラキラした外観を強調することができる。 In this decorative body, in a three-dimensional shape in which the bottom surface is a polygon having a quadrangle or more, the number of planes perpendicular to the bottom surface <the number of sides of the bottom It will be formed over the surface.
With respect to a plane perpendicular to the bottom of a three-dimensional shape (parallel to the tire side portion perpendicular to the ground when the tire is mounted on a vehicle) and a plane inclined to the bottom, When light is directed toward the diagonally downward from above, such as sunlight, the side of the tire (the side portion of the tire) is more inclined than the side perpendicular to the bottom side. Since the light can be reflected in the direction of the viewer on the front side and the oblique front side, the decorative body according to the eighth aspect in which one or more inclined surfaces can be formed with respect to the bottom surface The appearance can be emphasized.
第9の態様は、第1~第8の態様の何れか1態様に係る装飾体において、複数の前記立体形状のうちの少なくとも一部には、高さの異なる立体形状が含まれている。
A ninth aspect is the decorative body according to any one of the first to eighth aspects, wherein at least a part of the plurality of three-dimensional shapes includes three-dimensional shapes having different heights.
この装飾体は、複数の立体形状のうちの少なくとも一部に、高さの異なる立体形状が含まれているので、傾斜面の勾配にバラつきを出すことができる、言い換えれば、複数の立体形状の中に傾斜面の勾配の異なる複数の立体形状が含まれることとなり、複数の立体形状の傾斜面をすべて同じ勾配にした場合に比較して、キラキラした外観を強調することができる。
In this decorative body, since at least a part of the plurality of three-dimensional shapes includes three-dimensional shapes having different heights, it is possible to make the gradient of the inclined surface uneven, in other words, a plurality of three-dimensional shapes A plurality of three-dimensional shapes with different slopes of the slopes are included therein, and the sparkling appearance can be enhanced as compared to the case where the slopes of the plurality of three-dimensional shapes all have the same slope.
本開示の装飾体によれば、装飾体をキラキラした外観に見せることが可能となり、これよってタイヤの視認性を向上させることができる。
According to the decorative body of the present disclosure, it is possible to make the decorative body look like glittery, thereby improving the visibility of the tire.
図1~図14を用いて、本発明の一実施形態に係るタイヤ10について説明する。
図1に示すように、タイヤ10のタイヤサイド部12には、円環状の装飾体14が設けられている。 Atire 10 according to an embodiment of the present invention will be described using FIGS. 1 to 14.
As shown in FIG. 1, an annulardecorative body 14 is provided on the tire side portion 12 of the tire 10.
図1に示すように、タイヤ10のタイヤサイド部12には、円環状の装飾体14が設けられている。 A
As shown in FIG. 1, an annular
装飾体14は、図2、及び図3に示すように、タイヤサイド部12を平面視した際に略三角形に見える8種類の立体形状の一例としての反射ピース16、詳しくは後述する形状の反射ピース16A~16Hによって構成されている。
As shown in FIG. 2 and FIG. 3, the decorative body 14 is a reflecting piece 16 as an example of eight types of three-dimensional shapes that looks substantially triangular when the tire side portion 12 is viewed in plan, and the reflection of the shape to be described in detail later. It is constituted by pieces 16A to 16H.
図3に示すように、本実施形態では、反射ピース16A~16Gのうちの何れか2個を、最も長い辺同士を対向させて組み合わせることで、略菱形の外形を有する第3立体形状対の一例としての第1セット18A、第2セット18B、第3セット18C、及び第4セット18Dが構成されている。本実施形態の反射セル20では、反射ピース16Aと反射ピース16Bとが略菱形状に組み合わされて第1セット18Aが構成され、反射ピース16Cと反射ピース16Dとが略菱形に組み合わされて第2セット18Bが構成され、反射ピース16Eと反射ピース16Fとが略菱形に組み合わされて第3セット18Cが構成され、反射ピース16Gと反射ピース16Hとが略菱形に組み合わされて第4セット18Dが構成されている。そして、これら第1セット18A、第2セット18B、第3セット18C、及び第4セット18Dが一方向(図3においては、図面左右方向)に沿って順に並べられることで細長い略平行四辺形の外形を有する反射セル20が構成されている。
As shown in FIG. 3, in the present embodiment, any two of the reflecting pieces 16A to 16G are combined with the longest sides facing each other to form a third three-dimensional shape pair having a substantially rhombic outer shape. As an example, a first set 18A, a second set 18B, a third set 18C, and a fourth set 18D are configured. In the reflection cell 20 of the present embodiment, the reflection piece 16A and the reflection piece 16B are combined in a substantially rhombic shape to form a first set 18A, and the reflection piece 16C and the reflection piece 16D are combined in a substantially rhombus to form a second set. The set 18B is configured, and the reflecting piece 16E and the reflecting piece 16F are combined in a substantially rhombic shape to form a third set 18C, and the reflecting piece 16G and the reflecting piece 16H are combined in a substantially rhombic shape to configure a fourth set 18D It is done. Then, the first set 18A, the second set 18B, the third set 18C, and the fourth set 18D are arranged in order along one direction (in FIG. 3, the horizontal direction in the drawing), thereby forming an elongated and substantially parallelogram. A reflection cell 20 having an outer shape is configured.
本実施形態の装飾体14は、上記のようにして構成された反射セル20が、図2に示すように、反射セル20の長手方向、及び短手方向(長手方向と直交する方向)に敷き詰められることで構成されている。図3に示すように、短手方向に隣接する一方の反射セル20と他方の反射セル20とは、反射セル20の長手方向に若干ずらされて配置されている。
In the decorative body 14 of the present embodiment, as shown in FIG. 2, the reflecting cells 20 configured as described above are spread in the longitudinal direction and the short direction (the direction orthogonal to the longitudinal direction) of the reflecting cells 20. Is made up of As shown in FIG. 3, one reflection cell 20 adjacent to the short side direction and the other reflection cell 20 are arranged slightly shifted in the longitudinal direction of the reflection cell 20.
図2に示すように、反射セル20は、タイヤサイド部12を平面視した際、反射セル20の長手方向D(矢印の方向)が、円環状の装飾体14の半径方向r(矢印の方向)に対して65度(図2中の角度θ)で傾斜するように配置されている。
As shown in FIG. 2, when the reflective cell 20 is viewed in a plan view of the tire side portion 12, the longitudinal direction D (the direction of the arrow) of the reflective cell 20 is the radial direction r (the direction of the arrow) of the annular decorative body 14. Are arranged at an angle of 65 degrees (angle .theta. In FIG. 2).
(反射ピース16A)
図5に平面視で示すように、反射ピース16Aは、反射セル20の長手方向Dに平行な第1辺16Aa、反射セル20の長手方向Dに対して比較的大きな角度で傾斜している第2辺16Ab、及び反射セル20の長手方向Dに対して比較的小さな角度で傾斜している最も長い第3辺16Acを有している。なお、第1辺16Aa、及び第2辺16Abは、平面視で直線状であるが、第3辺16Acは、三角形状の内側へ凸となるように、一例として曲率半径Rが73.7mmで湾曲している。また、本実施形態において、第1辺16Aaと第2辺16Abとの成す角度θ1は、平面視で106.1度(deg)である。 (Reflective piece 16A)
As shown in plan view in FIG. 5, the reflectingpiece 16A is inclined at a relatively large angle with respect to the first side 16Aa parallel to the longitudinal direction D of the reflecting cell 20 and the longitudinal direction D of the reflecting cell 20. It has two sides 16Ab and a longest third side 16Ac inclined at a relatively small angle with respect to the longitudinal direction D of the reflection cell 20. Although the first side 16Aa and the second side 16Ab are linear in a plan view, the third side 16Ac has a radius of curvature R of 73.7 mm, for example, so as to be convex inward in a triangular shape. It is curved. Further, in the present embodiment, an angle θ1 formed between the first side 16Aa and the second side 16Ab is 106.1 degrees (deg) in plan view.
図5に平面視で示すように、反射ピース16Aは、反射セル20の長手方向Dに平行な第1辺16Aa、反射セル20の長手方向Dに対して比較的大きな角度で傾斜している第2辺16Ab、及び反射セル20の長手方向Dに対して比較的小さな角度で傾斜している最も長い第3辺16Acを有している。なお、第1辺16Aa、及び第2辺16Abは、平面視で直線状であるが、第3辺16Acは、三角形状の内側へ凸となるように、一例として曲率半径Rが73.7mmで湾曲している。また、本実施形態において、第1辺16Aaと第2辺16Abとの成す角度θ1は、平面視で106.1度(deg)である。 (
As shown in plan view in FIG. 5, the reflecting
反射ピース16Aは、第1辺16Aaの長さL1が2.1mmであり、第1辺16Aaと直交する方向の寸法hが2.325mmである。
The reflecting piece 16A has a length L1 of the first side 16Aa of 2.1 mm and a dimension h in the direction orthogonal to the first side 16Aa of 2.325 mm.
また、第1辺16Aaと第2辺16Abとの接続部16As1は、一例として、曲率半径R2.1mmの円弧状に形成されている。更に、第1辺16Aaと第3辺16Acとの接続部16As2、及び第2辺16Aaと第3辺16Acとの接続部16As3は、一例として、平面視で曲率半径R0.1mmの円弧状に形成されている。
The connecting portion 16As1 between the first side 16Aa and the second side 16Ab is, for example, formed in an arc shape having a curvature radius of R2.1 mm. Further, the connecting portion 16As2 between the first side 16Aa and the third side 16Ac and the connecting portion 16As3 between the second side 16Aa and the third side 16Ac are formed in an arc shape with a radius of curvature R 0.1 mm in plan view, as an example. It is done.
図7に示すように、反射ピース16Aは、全体がタイヤサイド部12の地部分から突出した高さの低い三角柱形状である。反射ピース16Aは、第3辺16Acが最も高く、その高さは全体が0.4mmで一定である。そして、反射ピース16Aの頂面(以後、傾斜面16Atとも呼ぶ)は、第3辺16Acから、第1辺16Aaと第2辺16Abとの接続部16As1に向けて傾斜角度一定として高さが漸減している。即ち、傾斜面16Atは、接続部16As1で最も高さが低くなっている(一例として、高さ0mm)。なお、傾斜面16Atは平面である。
As shown in FIG. 7, the reflecting piece 16 </ b> A has a triangular prism shape with a low height protruding from the ground portion of the tire side portion 12 as a whole. The reflecting piece 16A is the highest at the third side 16Ac, and the height is constant at 0.4 mm overall. The top surface (hereinafter also referred to as the inclined surface 16At) of the reflecting piece 16A gradually decreases in height from the third side 16Ac toward the connecting portion 16As1 of the first side 16Aa and the second side 16Ab. doing. That is, the height of the inclined surface 16At is the lowest at the connection portion 16As1 (for example, the height is 0 mm). The inclined surface 16At is a flat surface.
なお、図7(B)に示す矢印は、反射ピース16Aの傾斜面16Atの傾斜方向(下がる方向)を示しており、また、濃度の濃い部分は高さが高く、濃度の薄い部分は高さが低い部分を表している(図7(D)参照。)。
The arrow shown in FIG. 7B indicates the inclination direction (downward direction) of the inclined surface 16At of the reflecting piece 16A, and the high density portion is high and the low density portion is high. Represents the lower part (see FIG. 7 (D)).
(反射ピース16B)
図7に示すように、反射ピース16Bは、反射セル20の長手方向Dに平行な第1辺16Ba、反射セル20の長手方向Dに対して比較的大きな角度で傾斜する第2辺16Bb、及び反射セル20の長手方向Dに対して比較的小さな角度で傾斜している最も長い第3辺16Bcを有している。図5に示すように、反射ピース16Bの第1辺16Ba、及び第2辺16Bbは、平面視で直線状であるが、第3辺16Bcは、三角形状の内側へ凸となるように一例として曲率半径Rが73.7mmで湾曲している。また、本実施形態において、第1辺16Baと第2辺16Bbとの成す角度θ1は、平面視で106.1度(deg)である。 (Reflective piece 16B)
As shown in FIG. 7, the reflectingpiece 16B has a first side 16Ba parallel to the longitudinal direction D of the reflective cell 20, a second side 16Bb inclined at a relatively large angle with respect to the longitudinal direction D of the reflective cell 20, and It has the longest third side 16Bc which is inclined at a relatively small angle with respect to the longitudinal direction D of the reflection cell 20. As shown in FIG. 5, the first side 16Ba and the second side 16Bb of the reflecting piece 16B are linear in a plan view, but the third side 16Bc is convex to the inside of the triangle as an example The curvature radius R is curved at 73.7 mm. Further, in the present embodiment, the angle θ1 formed by the first side 16Ba and the second side 16Bb is 106.1 degrees (deg) in plan view.
図7に示すように、反射ピース16Bは、反射セル20の長手方向Dに平行な第1辺16Ba、反射セル20の長手方向Dに対して比較的大きな角度で傾斜する第2辺16Bb、及び反射セル20の長手方向Dに対して比較的小さな角度で傾斜している最も長い第3辺16Bcを有している。図5に示すように、反射ピース16Bの第1辺16Ba、及び第2辺16Bbは、平面視で直線状であるが、第3辺16Bcは、三角形状の内側へ凸となるように一例として曲率半径Rが73.7mmで湾曲している。また、本実施形態において、第1辺16Baと第2辺16Bbとの成す角度θ1は、平面視で106.1度(deg)である。 (
As shown in FIG. 7, the reflecting
また、第1辺16Baと第2辺16Bbとの接続部16Bs1は、一例として、平面視で曲率半径R2.1mmの円弧状に形成されている。更に、第1辺16Baと第3辺16Bcとの接続部16Bs2、及び第2辺16Bbと第3辺16Bcとの接続部16Ba3は、一例として、平面視で曲率半径R0.1mmの円弧状に形成されている。このように、反射ピース16Bの平面視形状は、平面視で略菱形とされた第1セット18Aの中心点を対称の中心として反射ピース16Aとは点対称形状とされている。
The connecting portion 16Bs1 between the first side 16Ba and the second side 16Bb is, for example, formed in an arc shape having a radius of curvature R2.1 mm in plan view. Further, the connecting portion 16Bs2 between the first side 16Ba and the third side 16Bc and the connecting portion 16Ba3 between the second side 16Bb and the third side 16Bc are formed in an arc shape having a radius of curvature R 0.1 mm in plan view, as an example. It is done. Thus, the plan view shape of the reflecting piece 16B is point-symmetrical to the reflecting piece 16A with the central point of the first set 18A, which is substantially rhombic in plan view, as the center of symmetry.
図7に示すように、反射ピース16Bは、全体がタイヤサイド部12の地部分から突出した高さの低い三角柱形状である。そして、反射ピース16Bの頂面(以後、傾斜面16Btとする)は、第1辺16Baと第2辺16Bbとの接続部16Bs1が最も高く(一例として、高さ0.4mm)、接続部16Bs1から第3辺16Bcに向けて下がるように傾斜し、第3辺16Bc全体が反射ピース16Bの中で最も高さが低くなっている(一例として、高さ0mmで一定)。なお、傾斜面16Btは平面である。
As shown in FIG. 7, the reflecting piece 16 </ b> B has a triangular prism shape with a low height protruding from the ground portion of the tire side portion 12 as a whole. The connecting portion 16Bs1 of the first side 16Ba and the second side 16Bb is the highest (for example, 0.4 mm in height) on the top surface of the reflecting piece 16B (hereinafter referred to as the inclined surface 16Bt), and the connecting portion 16Bs1 is To the third side 16Bc, and the height of the entire third side 16Bc is the lowest in the reflecting piece 16B (as an example, the height is constant at 0 mm). The inclined surface 16Bt is a flat surface.
なお、図7(B)に示す矢印は、反射ピース16Bの傾斜面16Btの傾斜方向(下がる方向)を示しており、また、濃度の濃い部分は高さが高く、薄い部分は高さが低い部分を表している。
The arrow shown in FIG. 7B indicates the inclination direction (downward direction) of the inclined surface 16Bt of the reflecting piece 16B, and the high density portion is high and the thin portion is low. Represents a part.
(反射ピース16C)
図8に示すように、反射ピース16Cの平面視形状は、反射ピース16Aと同一形状(三角形状)である。 (Reflective piece 16C)
As shown in FIG. 8, the plan view shape of the reflectingpiece 16C is the same shape (triangular shape) as the reflecting piece 16A.
図8に示すように、反射ピース16Cの平面視形状は、反射ピース16Aと同一形状(三角形状)である。 (
As shown in FIG. 8, the plan view shape of the reflecting
反射ピース16Cは、全体がタイヤサイド部12の地部分から突出した高さの低い三角柱形状である。反射ピース16Cは、第1辺16Caが最も高く(一例として、高さ0.4mm)、第1辺16Caから第2辺16Cbと第3辺16Ccとの接続部16Cs3に向けて下がるように傾斜し、接続部16Cs3が反射ピース16Cの中で最も高さが低くなっている(一例として、高さ0mm)。即ち、反射ピース16Cにおいて、第1辺16Caから第2辺16Cbと第3辺16Ccとの接続部16Cs3に向けて下がるように傾斜した傾斜面16Ctは、接続部16Cs3で最も高さが低くなっている(一例として、高さ0mm)。なお、傾斜面16Ctは平面である。
The reflecting piece 16C is in the form of a low-triangular prism having a height protruding from the ground portion of the tire side portion 12 as a whole. The reflection piece 16C is inclined such that the first side 16Ca is the highest (for example, the height is 0.4 mm) and is lowered from the first side 16Ca to the connecting portion 16Cs3 of the second side 16Cb and the third side 16Cc. The height of the connecting portion 16Cs3 is the lowest in the reflecting piece 16C (for example, the height is 0 mm). That is, in the reflecting piece 16C, the inclined surface 16Ct inclined so as to descend from the first side 16Ca to the connecting portion 16Cs3 of the second side 16Cb and the third side 16Cc has the highest height at the connecting portion 16Cs3. (For example, height 0 mm). The inclined surface 16Ct is a flat surface.
なお、図8(C)に示す矢印は、反射ピース16Cの傾斜面16Ctの傾斜方向(下がる方向)を示しており、また、濃度の濃い部分は高さが高く、薄い部分は高さが低い部分を表している。
The arrow shown in FIG. 8C indicates the inclination direction (downward direction) of the inclined surface 16Ct of the reflection piece 16C, and the high density part is high and the thin part is low. Represents a part.
(反射ピース16D)
図8に示すように、反射ピース16Dの平面視形状は、反射ピース16Bと同一形状(三角形状)である。 (Reflective piece 16D)
As shown in FIG. 8, the plan view shape of the reflectingpiece 16D is the same as the reflecting piece 16B (triangular shape).
図8に示すように、反射ピース16Dの平面視形状は、反射ピース16Bと同一形状(三角形状)である。 (
As shown in FIG. 8, the plan view shape of the reflecting
反射ピース16Dは、全体がタイヤサイド部12の地部分から一定高さ(一例として、0.2mm)で突出した高さの低い三角柱形状である。なお、反射ピース16Dの頂面16Dtは底面16bに平行な平面である。
The reflecting piece 16D is in the form of a low-triangular prism having a height that protrudes at a constant height (for example, 0.2 mm) from the ground portion of the tire side portion 12 as a whole. The top surface 16Dt of the reflecting piece 16D is a plane parallel to the bottom surface 16b.
(反射ピース16E)
図9に示すように、反射ピース16Eの平面視形状は、反射ピース16Aと同一形状(三角形状)である。 (Reflective piece 16E)
As shown in FIG. 9, the planar view shape of thereflective piece 16E is the same shape (triangular shape) as the reflective piece 16A.
図9に示すように、反射ピース16Eの平面視形状は、反射ピース16Aと同一形状(三角形状)である。 (
As shown in FIG. 9, the planar view shape of the
反射ピース16Eは、全体がタイヤサイド部12の地部分から突出した高さの低い三角柱形状である。反射ピース16Eは、第1辺16Eaと第2辺16Ebとの接続部16Es1が最も高く(一例として、高さ0.4mm)、第3辺16Ecに向けて下がるように傾斜し、第3辺16Ecが反射ピース16Eの中で最も高さが低くなっている(一例として、高さ0mmで一定)。即ち、反射ピース16Eにおいて、第1辺16Eaと第2辺16Ebとの接続部16Es1から第3辺16Ecに向けて下がるように傾斜した傾斜面16Etは、第3辺16Ecで最も高さが低くなっている。なお、傾斜面Etは平面である。
The reflecting piece 16E is in the form of a low-triangular prism having a height protruding from the ground portion of the tire side portion 12 as a whole. The reflecting piece 16E is inclined so that the connecting portion 16Es1 of the first side 16Ea and the second side 16Eb is the highest (for example, the height is 0.4 mm) and is lowered toward the third side 16Ec, and the third side 16Ec Is the lowest among the reflecting pieces 16E (as an example, the height is constant at 0 mm). That is, in the reflecting piece 16E, the inclined surface 16Et which is inclined from the connecting portion 16Es1 of the first side 16Ea and the second side 16Eb to the third side 16Ec has the lowest height at the third side 16Ec. ing. The inclined surface Et is a plane.
なお、図9(B)に示す矢印は、反射ピース16Bの傾斜面16Etの傾斜方向(下がる方向)を示しており、また、濃度の濃い部分は高さが高く、薄い部分は高さが低い部分を表している。
The arrow shown in FIG. 9B indicates the inclination direction (downward direction) of the inclined surface 16Et of the reflecting piece 16B, and the high density part is high and the thin part is low. Represents a part.
(反射ピース16F)
図9に示すように、反射ピース16Fの平面視形状は、反射ピース16Bと同一形状(三角形状)である。 (Reflective piece 16F)
As shown in FIG. 9, the planar view shape of thereflective piece 16F is the same shape (triangular shape) as the reflective piece 16B.
図9に示すように、反射ピース16Fの平面視形状は、反射ピース16Bと同一形状(三角形状)である。 (
As shown in FIG. 9, the planar view shape of the
図9に示すように、反射ピース16Fは、全体がタイヤサイド部12の地部分から突出した高さの低い三角柱形状である。反射ピース16Fは、第3辺16Fcが最も高く(一例として、高さ0.4mm)、第1辺16Faと第2辺16Fbとの接続部16Fs1に向けて下がるように傾斜し、接続部16Fs1が反射ピース16Fの中で最も高さが低くなっている(一例として、高さ0mm)。即ち、反射ピース16Fにおいて、第3辺16Fcから第1辺16Faと第2辺16Fbとの接続部16Fs1に向けて下がるように傾斜した傾斜面16Ftは、接続部16Fs1で最も高さが低くなっている。なお、傾斜面16Ftは平面である。
As shown in FIG. 9, the reflecting piece 16F is in the form of a low-triangular prism having a height protruding from the ground portion of the tire side portion 12 as a whole. The reflecting piece 16F is inclined so that the third side 16Fc is the highest (for example, height 0.4 mm) and is lowered toward the connecting portion 16Fs1 between the first side 16Fa and the second side 16Fb, and the connecting portion 16Fs1 The height is the lowest among the reflection pieces 16F (for example, the height is 0 mm). That is, in the reflecting piece 16F, the inclined surface 16Ft inclined so as to descend from the third side 16Fc to the connecting portion 16Fs1 of the first side 16Fa and the second side 16Fb has the highest height at the connecting portion 16Fs1. There is. The inclined surface 16Ft is a flat surface.
なお、図9(B)に示す矢印は、反射ピース16Fの傾斜面16Ftの傾斜方向(下がる方向)を示しており、また、濃度の濃い部分は高さが高く、薄い部分は高さが低い部分を表している。
The arrow shown in FIG. 9 (B) indicates the inclination direction (downward direction) of the inclined surface 16Ft of the reflecting piece 16F, and the high density part is high and the thin part is low. Represents a part.
(反射ピース16G)
図10に示すように、反射ピース16Gの平面視形状は、反射ピース16Aと同一形状(三角形状)である。 (Reflective piece 16G)
As shown in FIG. 10, the plan view shape of the reflectingpiece 16G is the same shape (triangular shape) as the reflecting piece 16A.
図10に示すように、反射ピース16Gの平面視形状は、反射ピース16Aと同一形状(三角形状)である。 (
As shown in FIG. 10, the plan view shape of the reflecting
反射ピース16Gは、全体がタイヤサイド部12の地部分から一定高さ(一例として、0.2mm)で突出した高さの低い三角柱形状である。なお、反射ピース16Gの頂面16Gtは底面16bに平行な平面である。
The reflecting piece 16 </ b> G is in the form of a low-triangular prism having a height that protrudes by a constant height (for example, 0.2 mm) from the ground portion of the tire side portion 12 as a whole. The top surface 16Gt of the reflecting piece 16G is a plane parallel to the bottom surface 16b.
(反射ピース16H)
図10に示すように、反射ピース16Hの平面視形状は、反射ピース16Bと同一形状(三角形状)である。 (Reflective piece 16H)
As shown in FIG. 10, the planar view shape of thereflective piece 16H is the same shape (triangular shape) as the reflective piece 16B.
図10に示すように、反射ピース16Hの平面視形状は、反射ピース16Bと同一形状(三角形状)である。 (
As shown in FIG. 10, the planar view shape of the
図10に示すように、反射ピース16Hは、全体がタイヤサイド部12の地部分から突出した高さの低い三角柱形状である。反射ピース16Hは、第2辺16Hbと第3辺16Hcとの接続部16Hs3が最も高く(一例として、高さ0.4mm)、第1辺16Haに向けて下がるように傾斜し、第1辺16Haが反射ピース16Bの中で最も高さが低くなっている(一例として、高さ0mmで一定)。即ち、反射ピース16Hにおいて、第2辺16Hbと16Hcとの接続部16Hs3から第1辺16Haに向けて下がるように傾斜した傾斜面16Htは、第1辺16Haで最も高さが低くなっている。なお、傾斜面16Htは平面である。
As shown in FIG. 10, the reflecting piece 16H is in the form of a triangular prism with a low height protruding from the ground portion of the tire side portion 12 as a whole. The reflecting piece 16H is inclined so that the connecting portion 16Hs3 between the second side 16Hb and the third side 16Hc is the highest (for example, the height is 0.4 mm) and is lowered toward the first side 16Ha, and the first side 16Ha Is the lowest among the reflecting pieces 16B (as an example, the height is constant at 0 mm). That is, in the reflecting piece 16H, the inclined surface 16Ht inclined so as to descend from the connecting portion 16Hs3 between the second side 16Hb and 16Hc to the first side 16Ha is the lowest at the first side 16Ha. The inclined surface 16Ht is a flat surface.
なお、図10(C)に示す矢印は、反射ピース16Hの傾斜面16Htの傾斜方向(下がる方向)を示しており、また、濃度の濃い部分は高さが高く、薄い部分は高さが低い部分を表している。
The arrow shown in FIG. 10C indicates the inclination direction (downward direction) of the inclined surface 16Ht of the reflecting piece 16H, and the high density part is high and the thin part is low. Represents a part.
図3に示すように、反射ピース16Aと反射ピース16Bとの間、反射ピース16Bと反射ピース16Cとの間、反射ピース16Eと反射ピース16Fとの間、反射ピース16Gと反射ピース16Hとの間に形成された、細長くて菱形の対角方向に延びる隙間S1は、タイヤサイド部12の地部分である。
As shown in FIG. 3, between the reflecting piece 16A and the reflecting piece 16B, between the reflecting piece 16B and the reflecting piece 16C, between the reflecting piece 16E and the reflecting piece 16F, and between the reflecting piece 16G and the reflecting piece 16H. A narrow and rhombic diagonally extending gap S1 formed in the above is a ground portion of the tire side portion 12.
また、反射セル20の短手方向に配置される一方の反射セル20と他方の反射セル20との間には、一定幅(一例として、0.1mm)の隙間S2が設けられている。この隙間S2もタイヤサイド部12の地部分である。
In addition, a gap S2 having a predetermined width (for example, 0.1 mm) is provided between one reflection cell 20 and the other reflection cell 20 arranged in the short direction of the reflection cell 20. The clearance S2 is also a ground portion of the tire side portion 12.
なお、装飾体14の反射ピース16の各頂面(傾斜面)は、光を正反射しやすいように、言い換えれば、乱反射し難いように、タイヤサイド部12よりも平滑とすることが好ましく、その表面粗さは、1~15Rz(Rt)とすることが好ましい。
Each top surface (inclined surface) of the reflecting piece 16 of the decorative body 14 is preferably smoother than the tire side portion 12 so as to facilitate regular reflection of light, in other words, less likely to diffusely reflect light, The surface roughness is preferably 1 to 15 Rz (Rt).
さらに、反射ピース16Aの傾斜面16At、反射ピース16Bの傾斜面16Bt、反射ピース16Cの傾斜面16Ct、反射ピース16Eの傾斜面16Et、反射ピース16Fの傾斜面16Ft、反射ピース16Hの傾斜面16Htのタイヤサイド部12の表面(反射ピースの底面16b)に対する傾斜角度は、3~60度の範囲内が好ましく、4~45度の範囲内がより好ましく、5~30度の範囲内がより一層好ましい。
Furthermore, the inclined surface 16At of the reflecting piece 16A, the inclined surface 16Bt of the reflecting piece 16B, the inclined surface 16Ct of the reflecting piece 16C, the inclined surface 16Et of the reflecting piece 16E, the inclined surface 16Ft of the reflecting piece 16F, and the inclined surface 16Ht of the reflecting piece 16H. The inclination angle with respect to the surface of the tire side portion 12 (the bottom surface 16b of the reflecting piece) is preferably in the range of 3 to 60 degrees, more preferably in the range of 4 to 45 degrees, and still more preferably in the range of 5 to 30 degrees .
(作用、効果)
装飾体14に光(例えば、太陽光等の外光)が照射されると、各反射ピースの各頂面が光を反射する。装飾体14を構成している各反射ピースの各頂面は、様々な方向を向いており(図6参照)、さらに、装飾体14が形成されているタイヤサイド部12は曲面となっているので、例えば、タイヤ10の正面または斜め正面側に立つ観察者からタイヤ10を観察した場合、観察者に向けて光を反射する頂面は、装飾体14の中で様々な位置に分散することになる。そして、タイヤ10が回転したり、タイヤ10が静止した状態で観察者が動いたりして、観察者とタイヤ10の装飾体14とが相対移動すると、観察者に向けて光を反射する頂面が相対移動と共に変わるので、観察者が装飾体14を見ると、光って見える部分(傾斜面、及び頂面)の位置がランダムに変わって揺らいだ感じが得られ、装飾体14がキラキラした外観に見える。 (Action, effect)
When thedecorative body 14 is irradiated with light (for example, external light such as sunlight), each top surface of each reflective piece reflects light. The top surfaces of the reflective pieces constituting the decorative body 14 face various directions (see FIG. 6), and the tire side portion 12 on which the decorative body 14 is formed is curved. Therefore, for example, when the tire 10 is observed from the viewer standing on the front side or the diagonal front side of the tire 10, the top surface that reflects light toward the viewer is dispersed at various positions in the decoration 14 become. Then, when the tire 10 rotates or the observer moves with the tire 10 stationary, and the observer and the decorative body 14 of the tire 10 move relative to each other, the top surface that reflects light toward the observer Changes with the relative movement, so when the observer looks at the decoration 14, the position of the light-appearing part (the inclined surface and the top surface) changes randomly and a shaking feeling is obtained, and the appearance of the decoration 14 having a glitter It looks like
装飾体14に光(例えば、太陽光等の外光)が照射されると、各反射ピースの各頂面が光を反射する。装飾体14を構成している各反射ピースの各頂面は、様々な方向を向いており(図6参照)、さらに、装飾体14が形成されているタイヤサイド部12は曲面となっているので、例えば、タイヤ10の正面または斜め正面側に立つ観察者からタイヤ10を観察した場合、観察者に向けて光を反射する頂面は、装飾体14の中で様々な位置に分散することになる。そして、タイヤ10が回転したり、タイヤ10が静止した状態で観察者が動いたりして、観察者とタイヤ10の装飾体14とが相対移動すると、観察者に向けて光を反射する頂面が相対移動と共に変わるので、観察者が装飾体14を見ると、光って見える部分(傾斜面、及び頂面)の位置がランダムに変わって揺らいだ感じが得られ、装飾体14がキラキラした外観に見える。 (Action, effect)
When the
本実施形態の装飾体14は、タイヤサイド部12を平面視したときのベクトルの向きが異なる3種類以上の反射ピース16を含んで構成されているので、ベクトルの向きがすべて同じ向きの反射ピースを含んで構成されている場合、及びベクトルの向きが異なる2種類の反射ピース16を含んで構成されている場合に比較して、キラキラ感を高めることができる。
Since the decorative body 14 of the present embodiment includes three or more types of reflecting pieces 16 having different vector orientations when the tire side portion 12 is viewed in plan, reflecting pieces having the same vector orientation are the same. Compared with the case where it comprises including, and the case where it comprises including the two types of reflective piece 16 from which direction of a vector differs, a feeling of glitter can be improved.
さらに、本実施形態の装飾体14では、反射ピース16の内で底面16bに対する傾斜角度が最も小さい傾斜面である反射ピース16Aの傾斜面16At、反射ピース16Bの傾斜面16Bt、反射ピース16Cの傾斜面16Ct、反射ピース16Eの傾斜面16Et、反射ピース16Fの傾斜面16Ft、反射ピース16Hの傾斜面16Htのタイヤサイド部12(反射ピースの底面16b)に対する傾斜角度を、3~60度の範囲内としているので、この範囲外とした場合に比較して、キラキラ感を高めることができる。
これにより、装飾体14は、本実施形態のタイヤ10の視認性を向上させたり、テクスチャ効果によって高級感を表現したりすることが可能となる。
なお、上記傾斜角度が3度未満になると、各傾斜面の傾斜角度が小さくなり過ぎ、タイヤサイド部12の表面に対して平行に近づくため、キラキラ感を高めるための光の反射が不足する。一方、上記傾斜角度が60度を超えると、各傾斜面の傾斜角度が大きくなり過ぎ、タイヤサイド部12を平面視したときの各傾斜面の面積が減ってしまい、キラキラ感を高めることが困難になる。 Furthermore, in thedecorative body 14 of the present embodiment, the inclined surface 16At of the reflecting piece 16A, the inclined surface 16Bt of the reflecting piece 16B, and the inclination of the reflecting piece 16C, which are the inclined surfaces having the smallest inclination angle with respect to the bottom surface 16b. The inclination angle of the surface 16Ct, the inclined surface 16Et of the reflecting piece 16E, the inclined surface 16Ft of the reflecting piece 16F, and the inclined surface 16Ht of the reflecting piece 16H with respect to the tire side portion 12 (bottom surface 16b of the reflecting piece) is in the range of 3 to 60 degrees. Therefore, the glittering feeling can be enhanced as compared with the case of being out of this range.
Thereby, thedecorative body 14 can improve the visibility of the tire 10 of the present embodiment, or can express a high-class feeling by the texture effect.
If the inclination angle is less than 3 degrees, the inclination angles of the respective inclined surfaces become too small, and approach parallel to the surface of thetire side portion 12, so that the reflection of light for enhancing the glitter feeling is insufficient. On the other hand, if the above-mentioned inclination angle exceeds 60 degrees, the inclination angle of each inclined surface becomes too large, the area of each inclined surface when the tire side portion 12 is viewed in plan decreases, and it is difficult to improve the glitter feeling become.
これにより、装飾体14は、本実施形態のタイヤ10の視認性を向上させたり、テクスチャ効果によって高級感を表現したりすることが可能となる。
なお、上記傾斜角度が3度未満になると、各傾斜面の傾斜角度が小さくなり過ぎ、タイヤサイド部12の表面に対して平行に近づくため、キラキラ感を高めるための光の反射が不足する。一方、上記傾斜角度が60度を超えると、各傾斜面の傾斜角度が大きくなり過ぎ、タイヤサイド部12を平面視したときの各傾斜面の面積が減ってしまい、キラキラ感を高めることが困難になる。 Furthermore, in the
Thereby, the
If the inclination angle is less than 3 degrees, the inclination angles of the respective inclined surfaces become too small, and approach parallel to the surface of the
本実施形態では、8種類の反射ピース16A~16Gで反射セル20を構成し、この反射セル20を長手方向、及び短手方向に敷き詰めて装飾体14を構成しているため、装飾体14を構成するすべての反射ピースの傾斜面のベクトルを各々異ならせる場合に比較して、タイヤ10を成形するモールドの設計、および加工が容易になる。
In the present embodiment, the reflective cell 20 is configured by eight types of reflective pieces 16A to 16G, and the reflective cell 20 is spread in the longitudinal direction and the lateral direction to configure the decorative body 14. The design and processing of the mold for molding the tire 10 are facilitated as compared to the case where the vectors of the inclined surfaces of all of the reflecting pieces to be configured are different.
以上、本発明の一実施形態に係るタイヤ10について説明したが、本発明は、上記に限定されるものでなく、上記以外にも、その主旨を逸脱しない範囲内において種々変形して実施可能であることは勿論である。
As mentioned above, although tire 10 concerning one embodiment of the present invention was explained, the present invention is not limited above, in the range which does not deviate from the main point besides the above, it can variously transform and can be carried out Of course there is one.
上記実施形態では、反射ピース16A、16B、16C、16E、16F、16Hの最大高さが0.4mmであったが、最大高さは0.4mmに限らない。また、反射ピース16D、16Gの高さが0.2mmであったが、高さは0.2mmに限らない。なお、反射ピース16A~Hは、タイヤサイド部12の地部分から0.1~1.5mm突出していることが好ましい。
Although the maximum height of the reflecting pieces 16A, 16B, 16C, 16E, 16F, 16H is 0.4 mm in the above embodiment, the maximum height is not limited to 0.4 mm. Moreover, although height of reflective piece 16D, 16G was 0.2 mm, height is not restricted to 0.2 mm. The reflecting pieces 16A to 16H preferably project from the ground portion of the tire side portion 12 by 0.1 to 1.5 mm.
上記実施形態では、装飾体14を構成する反射ピース16が三角柱形状であったが、本発明はこれに限らず、例えば、図11(A)に示すように、平面視形状が四角形の四角柱形状で、図11(B)~(D)に示すように、傾斜面22tのベクトルの方向が異なる反射ピース22で装飾体14を構成してもよく、図12に示すように、平面視形状が円形の円柱形状で、図12(B)~(D)に示すように、傾斜面24tのベクトルの方向が異なる反射ピース24で装飾体14を構成してもよく、図13に示すように、平面視形状が五角形の五角柱形状で、図13(B)~(D)に示すように、傾斜面26tのベクトルの方向が異なる反射ピース26で装飾体14を構成してもよく、図14に示すように、平面視形状が六角形の六角柱形状で、図14(B)~(D)に示すように、傾斜面28tのベクトルの方向が異なる反射ピース28で装飾体14を構成してもよく、反射ピースの平面視形状としてはこれら以外の種々の形状を採用することができ、また、底面形状の異なる反射ピースを同士組み合わせて装飾体14を構成してもよい。
In the above embodiment, the reflecting piece 16 constituting the decorative body 14 has a triangular prism shape, but the present invention is not limited thereto. For example, as shown in FIG. In the shape, as shown in FIGS. 11 (B) to 11 (D), the decorative body 14 may be constituted by the reflecting pieces 22 different in the direction of the vector of the inclined surface 22t, and as shown in FIG. In the shape of a circular cylinder, as shown in FIGS. 12 (B) to 12 (D), the decorative body 14 may be constituted by reflecting pieces 24 having different directions of the vector of the inclined surface 24t, as shown in FIG. The decorative body 14 may be formed of reflective pieces 26 having different directions of vectors of the inclined surface 26t, as shown in FIGS. 13 (B) to 13 (D). As shown in 14, it has a hexagonal prism shape in plan view. As shown in FIGS. 14 (B) to 14 (D), the decorative body 14 may be constituted by reflecting pieces 28 having different directions of the vector of the inclined surface 28t, and various shapes other than these as a plan view shape of the reflecting pieces. A shape can be employed, and the decorative body 14 may be configured by combining reflective pieces having different bottom shapes.
以下に、装飾体14について捕捉説明をする。
装飾体14は、一例として、図15(A)に示すように、互いに隣接する一方の反射ピース22のベクトル(矢印)の始点と他方の反射ピース22のベクトルの始点とが互いに隣接すると共に、一方の反射ピース22のベクトルと他方の反射ピース22のベクトルとが互いに反対方向を向いた反射ピース22の対を第1立体形状対30と定義し、図15(B)に示すように、互いに隣接する一方の反射ピース16のベクトルの終点と他方の反射ピース22のベクトルの終点とが互いに隣接すると共に、一方の反射ピース22のベクトルと他方の反射ピース16のベクトルとが互いに反対方向を向いた反射ピース22の対を第2立体形状対32と定義し、図15(C),15(D)に示すように、ベクトルの向きが同一方向を向いた反射ピース22が3以上連続した反射ピース22の集合体を立体形状群34と定義し、図15(E)、及び図15(F)に示すように、第1立体形状対30、第2立体形状対32、及び立体形状群34の何れにも属さない2つの反射ピース22からなる対を第3立体形状対36と定義したときに、タイヤサイド部12を平面視したときに、第3立体形状対36の総面積>第1立体形状対30の総面積、を満足する第1条件、第3立体形状対36の総面積>第2立体形状対32の総面積、を満足する第2条件、及び第3立体形状対36の総面積>立体形状群34の総面積数を満足する第3条件、の全ての条件を満足していればよい。言い換えれば、上記条件が満足されていれば、装飾体14の中に、第1立体形状対30、第2立体形状対32、及び立体形状群34が多少含まれていてもよい。なお、キラキラ感を強調するには、装飾体14においては、第3立体形状対36の総面積>第1立体形状対30の総面積+第2立体形状対32の総面積+立体形状群34の総面積、を満足することが好ましい。 In the following, thedecoration 14 is captured and described.
As an example, as shown in FIG. 15A, thedecorative body 14 has a start point of a vector (arrow) of one reflecting piece 22 adjacent to each other and a start point of a vector of the other reflecting piece 22 adjacent to each other A pair of reflecting pieces 22 in which the vector of one reflecting piece 22 and the vector of the other reflecting piece 22 face in the opposite direction is defined as a first three-dimensional shape pair 30, and as shown in FIG. The end point of the vector of one adjacent reflecting piece 16 and the end point of the vector of the other reflecting piece 22 are adjacent to each other, and the vector of one reflecting piece 22 and the vector of the other reflecting piece 16 face in the opposite directions. The pair of reflected pieces 22 is defined as a second solid shape pair 32, and as shown in FIGS. 15 (C) and 15 (D), the reflected pieces in which the vectors have the same direction. An aggregate of reflecting pieces 22 in which 2 is 3 or more continuous is defined as a three-dimensional shape group 34, and as shown in FIG. 15 (E) and FIG. 15 (F), a first three-dimensional shape pair 30, a second three-dimensional shape pair When the tire side portion 12 is viewed in plan when a pair consisting of two reflecting pieces 22 not belonging to any of 32 and the three-dimensional shape group 34 is defined as a third three-dimensional shape pair 36, the third three-dimensional shape pair A first condition satisfying a total area of 36> a first solid shape pair 30; a second condition satisfying a total area of a third solid shape pair 36> a second solid shape pair 32; All conditions of the third condition satisfying the total area number of the third three-dimensional shape pair 36> the total area number of the three-dimensional shape group 34 may be satisfied. In other words, the first three-dimensional shape pair 30, the second three-dimensional shape pair 32, and the three-dimensional shape group 34 may be included in the decorative body 14 as long as the above conditions are satisfied. In order to emphasize the sparkling feeling, in the decorative body 14, the total area of the third solid shape pair 36> the total area of the first solid shape pair 30 + the total area of the second solid shape pair 32 + the solid shape group 34 It is preferable to satisfy the total area of
装飾体14は、一例として、図15(A)に示すように、互いに隣接する一方の反射ピース22のベクトル(矢印)の始点と他方の反射ピース22のベクトルの始点とが互いに隣接すると共に、一方の反射ピース22のベクトルと他方の反射ピース22のベクトルとが互いに反対方向を向いた反射ピース22の対を第1立体形状対30と定義し、図15(B)に示すように、互いに隣接する一方の反射ピース16のベクトルの終点と他方の反射ピース22のベクトルの終点とが互いに隣接すると共に、一方の反射ピース22のベクトルと他方の反射ピース16のベクトルとが互いに反対方向を向いた反射ピース22の対を第2立体形状対32と定義し、図15(C),15(D)に示すように、ベクトルの向きが同一方向を向いた反射ピース22が3以上連続した反射ピース22の集合体を立体形状群34と定義し、図15(E)、及び図15(F)に示すように、第1立体形状対30、第2立体形状対32、及び立体形状群34の何れにも属さない2つの反射ピース22からなる対を第3立体形状対36と定義したときに、タイヤサイド部12を平面視したときに、第3立体形状対36の総面積>第1立体形状対30の総面積、を満足する第1条件、第3立体形状対36の総面積>第2立体形状対32の総面積、を満足する第2条件、及び第3立体形状対36の総面積>立体形状群34の総面積数を満足する第3条件、の全ての条件を満足していればよい。言い換えれば、上記条件が満足されていれば、装飾体14の中に、第1立体形状対30、第2立体形状対32、及び立体形状群34が多少含まれていてもよい。なお、キラキラ感を強調するには、装飾体14においては、第3立体形状対36の総面積>第1立体形状対30の総面積+第2立体形状対32の総面積+立体形状群34の総面積、を満足することが好ましい。 In the following, the
As an example, as shown in FIG. 15A, the
ここで、第1立体形状対30、第2立体形状対32、及び第1立体形状群34は、キラキラ感を得難いものであるため、装飾体14に含まれていなくてもよい。上記第3立体形状対30は、上記実施形態の装飾体14において、第1セット18A、第2セット18B、第3セット18C、及び第4セット18Dに対応するものである。上記実施形態の装飾体14において、上述した第1立体形状対30、第2立体形状対32、及び立体形状群34に対応するものは設けられていない。
Here, the first three-dimensional shape pair 30, the second three-dimensional shape pair 32, and the first three-dimensional shape group 34 do not have to be included in the decorative body 14 because it is difficult to obtain a sparkling feeling. The third three-dimensional shape pair 30 corresponds to the first set 18A, the second set 18B, the third set 18C, and the fourth set 18D in the decorative body 14 of the embodiment. In the decoration body 14 of the said embodiment, the thing corresponding to the 1st three-dimensional shape pair 30 mentioned above, the 2nd three-dimensional shape pair 32, and the three-dimensional shape group 34 is not provided.
さらに、装飾体14においては、一例として、図16に示すように、タイヤサイド部12を平面視して一方側から他方側に向けて連続して配置される3つの反射ピース22を見た時に、タイヤサイド部12の表面に立てた法線を基準としたベクトルの回転方向の向きが、一方側から他方側に向けて同一回転方向に同一角度(図16では、一例として90度)で変化しているものは、排除されることが好ましい。ベクトルの回転方向が同一回転方向に同一角度で3つ連続していると、傾斜面の配列に規則性があるように感じられ、光を反射する傾斜面の配列にランダム感が不足する。
Furthermore, in the decorative body 14, as an example, as shown in FIG. 16, when the tire side portion 12 is viewed in plan, three reflective pieces 22 continuously arranged from one side to the other side are viewed. The direction of the rotational direction of the vector based on the normal set on the surface of the tire side portion 12 changes at the same angle (90 degrees as an example in FIG. 16) in the same rotational direction from one side to the other side Preferably, those that are being excluded. When three vector rotation directions are continuous at the same angle in the same rotation direction, the arrangement of the inclined surfaces is felt to be regular, and the arrangement of the inclined surfaces that reflects light lacks a sense of randomness.
反射ピース16を平面視したとき、傾斜角度が最も小さい傾斜面の面積は、反射ピース16の底面16bの面積に対して70~100%の範囲内にあることが好ましい。これにより、キラキラ感を強調することができる。また、反射ピース16は、1cm2当たりに3~200個設けられていることが好ましく、10~100個設けられていることが更に好ましい。これにより、キラキラ感を強調することができる。
When the reflecting piece 16 is viewed in plan, the area of the inclined surface having the smallest inclination angle is preferably in the range of 70 to 100% with respect to the area of the bottom surface 16 b of the reflecting piece 16. This makes it possible to emphasize the sparkling feeling. The number of the reflecting pieces 16 is preferably 3 to 200 per 1 cm 2 , and more preferably 10 to 100. This makes it possible to emphasize the sparkling feeling.
次に、反射ピースの光を反射する頂面に関して補足する。
本実施形態において、キラキラ感を得るために、観察者に対して光を反射する面は、立体形状の一例としての反射ピースの内で、反射ピースの底面に対する傾斜角度が最も小さい傾斜面である。図17に示すように、底面が四角形の反射ピース22を考えた場合、反射ピース22の内で最も高い部分(頂点)22Tは、平面視した反射ピース22の底面の重心Gよりも、反射ピース22の底面の外周側の上方に位置することが、光を反射する傾斜面の面積を大きくする上で好ましい条件である。なお、図示を省略するが、最も高い部分が辺の場合、該辺の長手方向中央部を頂点22Tとする。図17に示す反射ピース22においては、最も高い部分22Tが底面の辺23aに近い部分に位置しており、これにより、反射ピース22の底面以外の複数の面の内で、最も面積が大きい面(底面に対する傾斜角度が最も小さい傾斜面)を形成することができる。 Next, the light of the reflective piece is supplemented with respect to the top surface that reflects it.
In the present embodiment, the surface reflecting light to the viewer is an inclined surface having the smallest inclination angle with respect to the bottom surface of the reflecting piece among the reflecting pieces as an example of the three-dimensional shape, in order to obtain a sparkling feeling. . As shown in FIG. 17, when considering the reflectingpiece 22 having a square bottom, the highest part (apex) 22T of the reflecting piece 22 is a reflecting piece than the center of gravity G of the bottom of the reflecting piece 22 in plan view. It is preferable to be positioned above the outer peripheral side of the bottom surface of the surface 22 in order to increase the area of the inclined surface that reflects light. In addition, although illustration is abbreviate | omitted, when the highest part is a side, let the longitudinal direction center part of this side be the vertex 22T. In the reflection piece 22 shown in FIG. 17, the highest portion 22T is located in a portion near the side 23a of the bottom surface, whereby the surface having the largest area among a plurality of surfaces other than the bottom surface of the reflection piece 22. (The inclined surface with the smallest inclination angle with respect to the bottom surface) can be formed.
本実施形態において、キラキラ感を得るために、観察者に対して光を反射する面は、立体形状の一例としての反射ピースの内で、反射ピースの底面に対する傾斜角度が最も小さい傾斜面である。図17に示すように、底面が四角形の反射ピース22を考えた場合、反射ピース22の内で最も高い部分(頂点)22Tは、平面視した反射ピース22の底面の重心Gよりも、反射ピース22の底面の外周側の上方に位置することが、光を反射する傾斜面の面積を大きくする上で好ましい条件である。なお、図示を省略するが、最も高い部分が辺の場合、該辺の長手方向中央部を頂点22Tとする。図17に示す反射ピース22においては、最も高い部分22Tが底面の辺23aに近い部分に位置しており、これにより、反射ピース22の底面以外の複数の面の内で、最も面積が大きい面(底面に対する傾斜角度が最も小さい傾斜面)を形成することができる。 Next, the light of the reflective piece is supplemented with respect to the top surface that reflects it.
In the present embodiment, the surface reflecting light to the viewer is an inclined surface having the smallest inclination angle with respect to the bottom surface of the reflecting piece among the reflecting pieces as an example of the three-dimensional shape, in order to obtain a sparkling feeling. . As shown in FIG. 17, when considering the reflecting
さらに、図18に示すように、反射ピース22の最も高い部分22Tを通り、底面に対して垂直とされた垂直線HLを含み、底面の辺のなかで最も高い部分22Tに最も近い辺23aの任意の点23apと、該辺23aと対向する辺23bの任意の点23bpとを含む三角形の仮想面25を考えたときに、仮想面25の底辺と仮想面25の一方側の斜辺(最も高い部分22Tと点23apと結ぶ辺)とでなす角度をθa、仮想面25の底辺と仮想面25の他方の斜辺(最も高い部分22Tと点23bpと結ぶ辺)とでなす角度をθbとしたときに、θbを85度以上95度以下とすることが好ましい。これにより、反射ピース22底面に対して傾斜角度が最も小さく設定された傾斜面22tの面積を大きくとることができ、キラキラ感を強調することができる。
Furthermore, as shown in FIG. 18, the side 23 a of the side 23 a that includes the vertical line HL that passes through the highest part 22 T of the reflecting piece 22 and is perpendicular to the bottom and is closest to the highest part 22 T When considering the virtual surface 25 of a triangle including an arbitrary point 23ap and an arbitrary point 23bp of the side 23b opposite to the side 23a, the base of the virtual surface 25 and the oblique side on one side of the virtual surface 25 (highest When the angle formed by the portion 22T and the side connecting the point 23ap is θa, and the angle formed by the base of the virtual surface 25 and the other oblique side of the virtual surface 25 (the side connecting the highest portion 22T and the point 23bp) is θb Preferably, θb is 85 degrees or more and 95 degrees or less. As a result, the area of the inclined surface 22t at which the inclination angle is set to be the smallest with respect to the bottom surface of the reflecting piece 22 can be made large, and the sparkling feeling can be emphasized.
次に、反射ピースの光を反射する頂面のベクトルについて補足する。
立体形状の一例としての反射ピースの内で、反射ピースの底面に対する傾斜角度が最も小さい傾斜面の最高部位側から最低部位側に向かう方向を傾斜面のベクトルと定義したが、例えば、図19に示すように、三角柱形状の反射ピース16で、三角形の何れかの頂点16Tが最も高く、頂点16Tと対向する辺16cが最も低い場合においては、頂点16Tから辺16cの中点16ccに向かう方向をベクトル(矢印で示す)とする。 Next, the vector of the top surface that reflects the light of the reflective piece is supplemented.
Of the reflecting pieces as an example of a three-dimensional shape, the direction from the side of the highest portion to the side of the lowest portion of the inclined surface having the smallest inclination angle to the bottom of the reflecting piece is defined as the vector of the inclined surface. As shown, in the triangular prism-shaped reflectingpiece 16, when the apex 16T of any of the triangles is the highest and the side 16c opposite to the apex 16T is the lowest, the direction from the apex 16T toward the middle point 16cc of the side 16c is It is a vector (indicated by an arrow).
立体形状の一例としての反射ピースの内で、反射ピースの底面に対する傾斜角度が最も小さい傾斜面の最高部位側から最低部位側に向かう方向を傾斜面のベクトルと定義したが、例えば、図19に示すように、三角柱形状の反射ピース16で、三角形の何れかの頂点16Tが最も高く、頂点16Tと対向する辺16cが最も低い場合においては、頂点16Tから辺16cの中点16ccに向かう方向をベクトル(矢印で示す)とする。 Next, the vector of the top surface that reflects the light of the reflective piece is supplemented.
Of the reflecting pieces as an example of a three-dimensional shape, the direction from the side of the highest portion to the side of the lowest portion of the inclined surface having the smallest inclination angle to the bottom of the reflecting piece is defined as the vector of the inclined surface. As shown, in the triangular prism-shaped reflecting
また、図20に示すように、三角柱形状の反射ピース16で、三角形の何れかの辺16cが最も高く(高さ一定)、この辺16cと対向する三角形の頂点16pが最も低い場合においては、辺16cの中点から頂点16pに向かう方向をベクトル(矢印で示す)とする。
Further, as shown in FIG. 20, in the triangular prism-shaped reflecting piece 16, in the case where any side 16c of the triangle is the highest (the height is constant) and the apex 16p of the triangle opposite to the side 16c is the lowest, The direction from the middle point 16c to the vertex 16p is a vector (indicated by an arrow).
また、図21に示すように、四角柱形状の反射ピース22で、四角形の何れかの辺22aが最も高く(高さ一定)、対向する辺22bが最も低い場合(高さ一定)においては、辺22aの中点から辺22bの中点に向かう方向をベクトル(矢印で示す)とする。
Further, as shown in FIG. 21, in the case of the quadrangular prism-shaped reflecting piece 22, when any side 22 a of the quadrangle is the highest (constant height) and the opposite side 22 b is the lowest (constant height), The direction from the middle point of the side 22a to the middle point of the side 22b is a vector (indicated by an arrow).
さらに、図22に示すように、四角柱形状の反射ピース22で、四角形の何れかの角部22pが最も高く、対向する角部22dが最も低い場合においては、一方の角部22pから他方の角部22dに向かう方向をベクトル(矢印で示す)とする。
Furthermore, as shown in FIG. 22, in the case of the square prism-shaped reflecting piece 22, when any corner 22p of a square is the highest and the opposing corner 22d is the lowest, one corner 22p to the other is The direction toward the corner 22 d is a vector (indicated by an arrow).
何れの形状であっても、反射ピースの底面に対する傾斜角度が最も小さい傾斜面において、高さが最も高くて一定の高さの辺があれば、その辺の中点をベクトルの始点とし、高さが最も低くて一定の高さの辺があれば、その辺の中点をベクトルの終点とする。また、傾斜面が円形、楕円形等の場合は、傾斜面の外周部分の最も高い点をベクトルの始点、最も低い点をベクトルの終点とする。
In any of the shapes, if there is a side with the highest height and a constant height on the inclined surface with the smallest inclination angle with respect to the bottom of the reflective piece, the middle point of that side is used as the start point of the vector. If there is an edge with the lowest and constant height, let the midpoint of that edge be the end of the vector. When the inclined surface is circular, elliptical or the like, the highest point of the outer peripheral portion of the inclined surface is taken as the start point of the vector, and the lowest point is taken as the end point of the vector.
なお、図23に示すような傾斜面22tの傾斜角度が同一とされた3つの反射ピース22が連続している場合、図24に示すような傾斜面22tの傾斜角度、及び高さが各々異なる3つの反射ピース22が連続している場合とを比較した場合、ランダム感を得るには後者の方が好ましい形態である。なお、傾斜面22tの傾斜角度、及び高さが各々異なる反射ピース22は、3以上連続していてもよい。
When three reflecting pieces 22 in which the inclination angles of the inclined surfaces 22t are the same as shown in FIG. 23 are the same, the inclination angles and heights of the inclined surfaces 22t shown in FIG. 24 are different from each other. When the three reflective pieces 22 are continuous, the latter is the preferred form to obtain a sense of randomness. Note that three or more reflecting pieces 22 having different inclination angles and heights of the inclined surface 22t may be continuous.
[試験例1]
以下の表1には、反射ピースの中で最も傾斜角度が小さい傾斜面(頂面)の角度を種々変更させた場合の、装飾体のキラキラ感の度合いをA、B、C、Dの4段階評価した結果が示されている。官能評価の結果において、Aは優、Bは良、Cは可、Dは不可を表している。 [Test Example 1]
Table 1 below shows the degree of glittering of the decorative body when the angle of the inclined surface (top surface) having the smallest inclination angle among the reflecting pieces is variously changed to 4 of A, B, C, D The results of the graded evaluation are shown. In the result of sensory evaluation, A is excellent, B is good, C is acceptable, D is unacceptable.
以下の表1には、反射ピースの中で最も傾斜角度が小さい傾斜面(頂面)の角度を種々変更させた場合の、装飾体のキラキラ感の度合いをA、B、C、Dの4段階評価した結果が示されている。官能評価の結果において、Aは優、Bは良、Cは可、Dは不可を表している。 [Test Example 1]
Table 1 below shows the degree of glittering of the decorative body when the angle of the inclined surface (top surface) having the smallest inclination angle among the reflecting pieces is variously changed to 4 of A, B, C, D The results of the graded evaluation are shown. In the result of sensory evaluation, A is excellent, B is good, C is acceptable, D is unacceptable.
装飾体の基本構造(上記変更点以外)は、前述した実施形態と同様のものとした。
官能評価の試験方法:
・タイヤの車両装着時を想定し、対象物が表現されているタイヤサイド面の正面から45度斜め上から光を当てた状態で対象物である装飾体を観測する。このとき、タイヤサイド面に対して正面垂直の位置から装飾体を観測する。左右各50cm以内で左右に動き、装飾体を観察し、評価する。
・観察者が動かない場合は、上記の様に、タイヤサイド面に対し正面垂直の位置から、タイヤを左右各45度転がして装飾体を観察、評価する。
The basic structure of the decorative body (other than the above-described change points) is the same as that of the embodiment described above.
Test method of sensory evaluation:
-Assuming that the tire is mounted on a vehicle, observe the decorative body that is the object in a state where light is applied from 45 degrees diagonally from the front of the tire side surface on which the object is represented. At this time, the decoration is observed from a position perpendicular to the front with respect to the tire side surface. Move to the left and right within 50 cm of each side to observe and evaluate the decoration.
-If the observer does not move, as described above, the tire is rolled 45 degrees to the left and right from a position perpendicular to the front of the tire side surface to observe and evaluate the decorative body.
官能評価の試験方法:
・タイヤの車両装着時を想定し、対象物が表現されているタイヤサイド面の正面から45度斜め上から光を当てた状態で対象物である装飾体を観測する。このとき、タイヤサイド面に対して正面垂直の位置から装飾体を観測する。左右各50cm以内で左右に動き、装飾体を観察し、評価する。
・観察者が動かない場合は、上記の様に、タイヤサイド面に対し正面垂直の位置から、タイヤを左右各45度転がして装飾体を観察、評価する。
The basic structure of the decorative body (other than the above-described change points) is the same as that of the embodiment described above.
Test method of sensory evaluation:
-Assuming that the tire is mounted on a vehicle, observe the decorative body that is the object in a state where light is applied from 45 degrees diagonally from the front of the tire side surface on which the object is represented. At this time, the decoration is observed from a position perpendicular to the front with respect to the tire side surface. Move to the left and right within 50 cm of each side to observe and evaluate the decoration.
-If the observer does not move, as described above, the tire is rolled 45 degrees to the left and right from a position perpendicular to the front of the tire side surface to observe and evaluate the decorative body.
表1に示す試験結果から、反射ピースの中で最も傾斜角度が小さい傾斜面の傾斜角度を変更することにより、キラキラ感が変わることが分かる。そして、傾斜角度が3~60度の範囲内に設定された装飾体は、官能評価でCランク以上が得られ、傾斜角度が4~45度の範囲内に設定された装飾体は、官能評価でBランク以上が得られ、傾斜角度が5~30度の範囲内に設定された装飾体は、官能評価でAランクが得られることが分かった。
From the test results shown in Table 1, it can be seen that the glitter feeling is changed by changing the inclination angle of the inclined surface having the smallest inclination angle among the reflective pieces. And, a decorative body whose inclination angle is set in the range of 3 to 60 degrees has C rank or higher in sensory evaluation, and a decorative body whose inclination angle is set in the range of 4 to 45 degrees has sensory evaluation It was found that in the decorative body in which the B rank or more was obtained and the inclination angle was set in the range of 5 to 30 degrees, the A rank was obtained by sensory evaluation.
したがって、反射ピースの中で最も傾斜角度が小さい傾斜面の傾斜角度は、3~60度の範囲内に設定することが好ましく4~45度の範囲内に設定することがより好ましく、5~30度の範囲内に設定することがより一層好ましいことが分かる。
Therefore, the inclination angle of the inclined surface having the smallest inclination angle among the reflecting pieces is preferably set in the range of 3 to 60 degrees, more preferably in the range of 4 to 45 degrees, and more preferably 5 to 30 It is understood that setting within the range of degrees is even more preferable.
[試験例2]
図25には、装飾体を平面視したときの装飾体の単位面積に占める最も傾斜角度の小さい傾斜面の総面積の割合、及び装飾体14に配置する反射ピースの密度を種々変更させた場合の、装飾体のキラキラ感の度合いをA、B、C、D、Eの5段階評価(官能評価)した結果が示されている。
試験に用いた装飾体は、平面視で三角形の反射ピースからなるものを用いた。
官能評価の試験方法
・タイヤの車両装着時を想定し、対象物が表現されているタイヤサイド面の正面から45度斜め上から光を当てた状態で対象物である装飾体を観測する。このとき、タイヤサイド面に対して正面垂直の位置から装飾体を観測する。左右各50cm以内で左右に動き、装飾体を観察し、キラキラ感を評価する。
・観察者が動かない場合は、上記の様に、タイヤサイド面に対し正面垂直の位置から、タイヤを左右各45度転がして装飾体を観察、評価する。
官能評価の結果において、Aは最優、Bは優、Cは良、Dは可、Eは不可を表している。 [Test Example 2]
In FIG. 25, the ratio of the total area of the inclined surface having the smallest inclination angle to the unit area of the decorative body in plan view and the density of the reflective pieces disposed on thedecorative body 14 are variously changed. The result of having carried out five-step evaluation (sensory evaluation) of A, B, C, D, and E the degree of the sparkling feeling of a decoration is shown.
The decoration used for the test used what consists of a triangular reflective piece by planar view.
Test method of sensory evaluation-Assuming that the tire is mounted on a vehicle, observe the decorative body as a target in a state where light is applied from 45 degrees diagonally from the front of the tire side surface where the target is expressed. At this time, the decoration is observed from a position perpendicular to the front with respect to the tire side surface. Move to the left and right within 50 cm of each side, observe the decoration, and evaluate the sparkling feeling.
-If the observer does not move, as described above, the tire is rolled 45 degrees to the left and right from a position perpendicular to the front of the tire side surface to observe and evaluate the decorative body.
In the results of sensory evaluation, A represents the best, B represents the good, C represents the good, D represents the acceptability, and E represents the rejectability.
図25には、装飾体を平面視したときの装飾体の単位面積に占める最も傾斜角度の小さい傾斜面の総面積の割合、及び装飾体14に配置する反射ピースの密度を種々変更させた場合の、装飾体のキラキラ感の度合いをA、B、C、D、Eの5段階評価(官能評価)した結果が示されている。
試験に用いた装飾体は、平面視で三角形の反射ピースからなるものを用いた。
官能評価の試験方法
・タイヤの車両装着時を想定し、対象物が表現されているタイヤサイド面の正面から45度斜め上から光を当てた状態で対象物である装飾体を観測する。このとき、タイヤサイド面に対して正面垂直の位置から装飾体を観測する。左右各50cm以内で左右に動き、装飾体を観察し、キラキラ感を評価する。
・観察者が動かない場合は、上記の様に、タイヤサイド面に対し正面垂直の位置から、タイヤを左右各45度転がして装飾体を観察、評価する。
官能評価の結果において、Aは最優、Bは優、Cは良、Dは可、Eは不可を表している。 [Test Example 2]
In FIG. 25, the ratio of the total area of the inclined surface having the smallest inclination angle to the unit area of the decorative body in plan view and the density of the reflective pieces disposed on the
The decoration used for the test used what consists of a triangular reflective piece by planar view.
Test method of sensory evaluation-Assuming that the tire is mounted on a vehicle, observe the decorative body as a target in a state where light is applied from 45 degrees diagonally from the front of the tire side surface where the target is expressed. At this time, the decoration is observed from a position perpendicular to the front with respect to the tire side surface. Move to the left and right within 50 cm of each side, observe the decoration, and evaluate the sparkling feeling.
-If the observer does not move, as described above, the tire is rolled 45 degrees to the left and right from a position perpendicular to the front of the tire side surface to observe and evaluate the decorative body.
In the results of sensory evaluation, A represents the best, B represents the good, C represents the good, D represents the acceptability, and E represents the rejectability.
図25に示す試験結果から、反射ピースの頂面の面積の割合と(構成1)、反射ピースの密度(構成2)との組み合わせにより、キラキラ感が変わることが分かる。
即ち、試験結果から、装飾体14をタイヤ10の軸方向から平面視した際の、各反射ピースの傾斜面の面積を大きくして、反射面積を確保することが好ましいことが分かる。
さらに、試験結果から、装飾体14に配置する反射ピースの密度は、1cm2当たり3~200個とすることが好ましく、1cm2当たり10~100個とすることが更に好ましいことが分かる。 From the test results shown in FIG. 25, it can be seen that the combination of the ratio of the area of the top face of the reflective piece with the (Configuration 1) and the density of the reflective piece (Configuration 2) changes the glitter feeling.
That is, it is understood from the test results that it is preferable to secure the reflection area by enlarging the area of the inclined surface of each reflecting piece when thedecorative body 14 is viewed in plan from the axial direction of the tire 10.
Further, from the test results, it is understood that the density of the reflective pieces disposed in thedecorative body 14 is preferably 3 to 200 per cm 2, and more preferably 10 to 100 per cm 2 .
即ち、試験結果から、装飾体14をタイヤ10の軸方向から平面視した際の、各反射ピースの傾斜面の面積を大きくして、反射面積を確保することが好ましいことが分かる。
さらに、試験結果から、装飾体14に配置する反射ピースの密度は、1cm2当たり3~200個とすることが好ましく、1cm2当たり10~100個とすることが更に好ましいことが分かる。 From the test results shown in FIG. 25, it can be seen that the combination of the ratio of the area of the top face of the reflective piece with the (Configuration 1) and the density of the reflective piece (Configuration 2) changes the glitter feeling.
That is, it is understood from the test results that it is preferable to secure the reflection area by enlarging the area of the inclined surface of each reflecting piece when the
Further, from the test results, it is understood that the density of the reflective pieces disposed in the
2017年12月12日に出願された日本国特許出願2017-238078号の開示は、その全体が参照により本明細書に取り込まれる。
本明細書に記載されたすべての文献、特許出願、および技術規格は、個々の文献、特許出願、および技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。 The disclosure of Japanese Patent Application No. 2017-238078 filed December 12, 2017 is incorporated herein by reference in its entirety.
All documents, patent applications and technical standards described herein are as specific and individually as individual documents, patent applications and technical standards are incorporated by reference. Incorporated herein by reference.
本明細書に記載されたすべての文献、特許出願、および技術規格は、個々の文献、特許出願、および技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。 The disclosure of Japanese Patent Application No. 2017-238078 filed December 12, 2017 is incorporated herein by reference in its entirety.
All documents, patent applications and technical standards described herein are as specific and individually as individual documents, patent applications and technical standards are incorporated by reference. Incorporated herein by reference.
Claims (9)
- タイヤサイド部の表面を底面として、前記底面、及び前記底面に垂直な面以外の方向に傾斜する複数の傾斜面を備えた複数の立体形状を含んで構成された装飾体であって、
前記立体形状の内で前記底面に対する傾斜角度が最も小さい前記傾斜面の前記底面に対する傾斜角度は、3~60度の範囲内に設定されており、
前記傾斜角度が最も小さい前記傾斜面の最高部位側から最低部位側に向かう方向を前記傾斜面のベクトルと定義したときに、
前記タイヤサイド部を平面視したときの前記ベクトルの向きが異なる3種類以上の前記立体形状を含んで構成されている、装飾体。 A decorative body comprising a plurality of three-dimensional shapes including a bottom surface and a plurality of inclined surfaces inclined in a direction other than the surface perpendicular to the bottom surface, with the surface of the tire side portion as the bottom surface,
Among the three-dimensional shape, the inclination angle of the inclined surface with the smallest inclination angle with respect to the bottom surface with respect to the bottom surface is set in the range of 3 to 60 degrees,
When a direction from the highest portion side to the lowest portion side of the inclined surface having the smallest inclination angle is defined as a vector of the inclined surface,
The decoration body comprised including three or more types of said three-dimensional shapes from which direction of the said vector when planarly seeing the said tire side part differs. - 前記傾斜角度が4~45度の範囲内に設定されている、請求項1に記載の装飾体。 The decorative body according to claim 1, wherein the inclination angle is set in a range of 4 to 45 degrees.
- 前記傾斜角度が5~30度の範囲内に設定されている、請求項1に記載の装飾体。 The decorative body according to claim 1, wherein the inclination angle is set in the range of 5 to 30 degrees.
- 前記底面の外辺の上方に最大高さを有する辺を有する前記立体形状、または前記底面の外辺の上方に一つの頂点を有する前記立体形状が含まれている、請求項1~請求項3の何れか1項に記載の装飾体。 The three-dimensional shape having a side having a maximum height above the outer side of the bottom surface, or the three-dimensional shape having one vertex above the outer side of the bottom surface are included. The decorative body according to any one of the above.
- 平面視したときの単位面積当たりに占める前記傾斜角度が最も小さい前記傾斜面の面積が70~100%の範囲内にある、請求項1~請求項4の何れか1項に記載の装飾体。 The decorative body according to any one of claims 1 to 4, wherein an area of the inclined surface having the smallest inclination angle per unit area in plan view is in a range of 70 to 100%.
- 前記傾斜角度が最も小さい前記傾斜面は、前記タイヤサイド部よりも平滑な平面である、請求項1~請求項5の何れか1項に記載の装飾体。 The decorative body according to any one of claims 1 to 5, wherein the inclined surface having the smallest inclination angle is a flatter surface than the tire side portion.
- 前記立体形状は、1cm2当たりに3~200個設けられている、請求項1~請求項6の何れか1項に記載の装飾体。 The three-dimensional shape is provided at three to 200 per 1 cm 2, the decorative body according to any one of claims 1 to 6.
- 前記底面が四角形以上の多角形の場合、複数の前記立体形状の一部には、前記底面に対して垂直な面の数<前記底面の辺の数とされた立体形状が含まれている、請求項1~請求項7の何れか1項に記載の装飾体。 In the case where the bottom surface is a polygon having a quadrangle or more, a part of the plurality of three-dimensional shapes includes a three-dimensional shape in which the number of planes perpendicular to the bottom surface <the number of sides of the bottom surface. A decorative body according to any one of claims 1 to 7.
- 複数の前記立体形状のうちの少なくとも一部には、高さの異なる立体形状が含まれている、請求項1~請求項8の何れか1項に記載の装飾体。 The decorative body according to any one of claims 1 to 8, wherein at least a part of the plurality of three-dimensional shapes includes three-dimensional shapes having different heights.
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US16/771,273 US20200298630A1 (en) | 2017-12-12 | 2018-12-03 | Decorative body |
CN201880079755.1A CN111491810B (en) | 2017-12-12 | 2018-12-03 | Decorative body |
EP18889178.2A EP3725563B1 (en) | 2017-12-12 | 2018-12-03 | Decorative body |
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Also Published As
Publication number | Publication date |
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EP3725563B1 (en) | 2024-02-07 |
EP3725563A4 (en) | 2021-09-01 |
JP2019104385A (en) | 2019-06-27 |
CN111491810A (en) | 2020-08-04 |
EP3725563A1 (en) | 2020-10-21 |
US20200298630A1 (en) | 2020-09-24 |
CN111491810B (en) | 2022-06-14 |
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